Math Problem Statement

solve by substitution y= -6x+5 -2x+y=5 x= y=

Solution

To solve the system of equations using substitution, we can follow these steps:

Given equations:

  1. y=6x+5y = -6x + 5
  2. 2x+y=5-2x + y = 5

Step 1: Substitute the expression for yy from the first equation into the second equation.

Since y=6x+5y = -6x + 5, we can replace yy in the second equation:

2x+(6x+5)=5-2x + (-6x + 5) = 5

Simplify the equation:

2x6x+5=5-2x - 6x + 5 = 5

8x+5=5-8x + 5 = 5

Step 2: Solve for xx.

Subtract 5 from both sides:

8x=0-8x = 0

Divide by 8-8:

x=0x = 0

Step 3: Substitute x=0x = 0 into the first equation to find yy.

y=6(0)+5y = -6(0) + 5

y=5y = 5

So, the solution is:

x=0,y=5x = 0, \quad y = 5

Would you like further details on this solution, or do you have any questions? Here are some related problems you might find interesting:

  1. Solve the system using the elimination method: 3x+2y=123x + 2y = 12 and xy=3x - y = 3.
  2. Find the intersection point of the lines represented by the equations 2x3y=62x - 3y = 6 and 4x+y=74x + y = 7.
  3. Solve by substitution: y=3x4y = 3x - 4 and 5xy=115x - y = 11.
  4. Determine if the system x+y=1x + y = 1 and 2x+2y=22x + 2y = 2 has one solution, no solution, or infinitely many solutions.
  5. Use substitution to solve the system: 2y=4x62y = 4x - 6 and 3xy=73x - y = 7.

Tip: When solving systems of equations by substitution, always start by isolating one variable in one of the equations to make the substitution easier.

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Math Problem Analysis

Mathematical Concepts

Algebra
Systems of Linear Equations
Substitution Method

Formulas

Substitution method: solving one equation for a variable and substituting into the other equation

Theorems

Substitution Method Theorem
Basic Properties of Equality

Suitable Grade Level

Grades 8-10