Math Problem Statement

177x+52y=1

Solution

You have the linear Diophantine equation:

177x+52y=1177x + 52y = 1

This is an equation where you need to find integer solutions for xx and yy. The method to solve this is typically through the Extended Euclidean Algorithm, which can be used to find integer solutions to equations of the form ax+by=gcd(a,b)ax + by = \gcd(a, b).

Here are the steps:

Step 1: Apply the Euclidean algorithm to find the greatest common divisor (gcd) of 177 and 52.

  1. Divide 177 by 52: 177÷52=3(quotient)remainder=1773×52=177156=21177 \div 52 = 3 \quad \text{(quotient)} \quad \text{remainder} = 177 - 3 \times 52 = 177 - 156 = 21 So, 177=3×52+21177 = 3 \times 52 + 21.

  2. Now, divide 52 by 21: 52÷21=2(quotient)remainder=522×21=5242=1052 \div 21 = 2 \quad \text{(quotient)} \quad \text{remainder} = 52 - 2 \times 21 = 52 - 42 = 10 So, 52=2×21+1052 = 2 \times 21 + 10.

  3. Divide 21 by 10: 21÷10=2(quotient)remainder=212×10=2120=121 \div 10 = 2 \quad \text{(quotient)} \quad \text{remainder} = 21 - 2 \times 10 = 21 - 20 = 1 So, 21=2×10+121 = 2 \times 10 + 1.

  4. Finally, divide 10 by 1: 10÷1=10(quotient)remainder=010 \div 1 = 10 \quad \text{(quotient)} \quad \text{remainder} = 0 So, 10=10×1+010 = 10 \times 1 + 0.

Now that the remainder is 0, we stop. The gcd of 177 and 52 is 1, which is exactly what we want because 1 is the right-hand side of the equation.

Step 2: Use the Extended Euclidean Algorithm to express the gcd as a linear combination of 177 and 52.

We now backtrack through the Euclidean steps to write 1 as a combination of 177 and 52.

  1. From 21=2×10+121 = 2 \times 10 + 1, we can solve for 1: 1=212×101 = 21 - 2 \times 10
  2. Substitute 10=522×2110 = 52 - 2 \times 21 into the equation: 1=212×(522×21)1 = 21 - 2 \times (52 - 2 \times 21) Simplify: 1=212×52+4×21=5×212×521 = 21 - 2 \times 52 + 4 \times 21 = 5 \times 21 - 2 \times 52
  3. Now, substitute 21=1773×5221 = 177 - 3 \times 52 into this: 1=5×(1773×52)2×521 = 5 \times (177 - 3 \times 52) - 2 \times 52 Simplify: 1=5×17715×522×52=5×17717×521 = 5 \times 177 - 15 \times 52 - 2 \times 52 = 5 \times 177 - 17 \times 52

Thus, we have found that: 1=5×17717×521 = 5 \times 177 - 17 \times 52

Step 3: Solution

The integers x=5x = 5 and y=17y = -17 are a particular solution to the equation 177x+52y=1177x + 52y = 1.

General Solution

The general solution for the equation 177x+52y=1177x + 52y = 1 is given by: x=5+52t,y=17177tx = 5 + 52t, \quad y = -17 - 177t for any integer tt.

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Math Problem Analysis

Mathematical Concepts

Linear Diophantine Equations
Euclidean Algorithm
Extended Euclidean Algorithm

Formulas

Linear Diophantine Equation: ax + by = gcd(a, b)
General solution: x = x0 + b * t, y = y0 - a * t

Theorems

Euclidean Algorithm
Extended Euclidean Algorithm

Suitable Grade Level

Grades 10-12