Question

Solve the following equations: 9x + 15 = 20 – 5​

Answer 1

Answer:

Step-by-step explanation:

Solution for 9x+15=20-x equation:

Simplifying

9x + 15 = 20 + -1x

Reorder the terms:

15 + 9x = 20 + -1x

Solving

15 + 9x = 20 + -1x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add 'x' to each side of the equation.

15 + 9x + x = 20 + -1x + x

Combine like terms: 9x + x = 10x

15 + 10x = 20 + -1x + x

Combine like terms: -1x + x = 0

15 + 10x = 20 + 0

15 + 10x = 20

Add '-15' to each side of the equation.

15 + -15 + 10x = 20 + -15

Combine like terms: 15 + -15 = 0

0 + 10x = 20 + -15

10x = 20 + -15

Combine like terms: 20 + -15 = 5

10x = 5

Divide each side by '10'.

x = 0.5

Simplifying

x = 0.5