Math Problem Statement

Solve the following algebraic equations: 1. 8z = 7z - 7 2. 7z = 39 - 6z 3. 5q = 44 - 6q 4. -12a - 8 = -16a 5. 9k = 8k - 11 6. b = -4b - 15 7. 4x + 36 = 10x 8. c = -3c - 20 9. 6x + 27 = 9x

Solution

I see you've uploaded an image with several algebraic equations. Let's go through each one to solve them step by step.

Top Row:

  1. Equation 1: 8z=7z78z = 7z - 7 Subtract 7z7z from both sides: 8z7z=7    z=78z - 7z = -7 \implies z = -7

  2. Equation 2: 7z=396z7z = 39 - 6z Add 6z6z to both sides: 7z+6z=39    13z=397z + 6z = 39 \implies 13z = 39 Now divide by 13: z=39/13=3z = 39 / 13 = 3

  3. Equation 3: 5q=446q5q = 44 - 6q Add 6q6q to both sides: 5q+6q=44    11q=445q + 6q = 44 \implies 11q = 44 Now divide by 11: q=44/11=4q = 44 / 11 = 4

Middle Row:

  1. Equation 4: 12a8=16a-12a - 8 = -16a Add 12a12a to both sides: 8=16a+12a    8=4a-8 = -16a + 12a \implies -8 = -4a Now divide by 4-4: a=8/4=2a = -8 / -4 = 2

  2. Equation 5: 9k=8k119k = 8k - 11 Subtract 8k8k from both sides: 9k8k=11    k=119k - 8k = -11 \implies k = -11

  3. Equation 6: b=4b15b = -4b - 15 Add 4b4b to both sides: b+4b=15    5b=15b + 4b = -15 \implies 5b = -15 Now divide by 5: b=15/5=3b = -15 / 5 = -3

Bottom Row:

  1. Equation 7: 4x+36=10x4x + 36 = 10x Subtract 4x4x from both sides: 36=6x36 = 6x Now divide by 6: x=36/6=6x = 36 / 6 = 6

  2. Equation 8: c=3c20c = -3c - 20 Add 3c3c to both sides: c+3c=20    4c=20c + 3c = -20 \implies 4c = -20 Now divide by 4: c=20/4=5c = -20 / 4 = -5

  3. Equation 9: 6x+27=9x6x + 27 = 9x Subtract 6x6x from both sides: 27=3x27 = 3x Now divide by 3: x=27/3=9x = 27 / 3 = 9


Would you like any more detailed steps for a specific equation? Here are some related questions to consider:

  1. What happens if both variables have the same coefficient?
  2. How do you deal with negative variables?
  3. What do you do when a variable appears on both sides of the equation?
  4. How can you check if your solution is correct?
  5. How do equations change when fractions are involved?

Tip: Always simplify the equation as much as possible before solving it to avoid unnecessary steps.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Variable Isolation

Formulas

General linear equation formula: ax + b = cx + d
Variable isolation techniques: Addition/Subtraction, Multiplication/Division

Theorems

Properties of equality: Adding/Subtracting the same value on both sides
Combining like terms

Suitable Grade Level

Grades 6-8