5(2x+5)-21=7x-8

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Solution for 5(2x+5)-21=7x-8 equation:


Simplifying
5(2x + 5) + -21 = 7x + -8

Reorder the terms:
5(5 + 2x) + -21 = 7x + -8
(5 * 5 + 2x * 5) + -21 = 7x + -8
(25 + 10x) + -21 = 7x + -8

Reorder the terms:
25 + -21 + 10x = 7x + -8

Combine like terms: 25 + -21 = 4
4 + 10x = 7x + -8

Reorder the terms:
4 + 10x = -8 + 7x

Solving
4 + 10x = -8 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
4 + 10x + -7x = -8 + 7x + -7x

Combine like terms: 10x + -7x = 3x
4 + 3x = -8 + 7x + -7x

Combine like terms: 7x + -7x = 0
4 + 3x = -8 + 0
4 + 3x = -8

Add '-4' to each side of the equation.
4 + -4 + 3x = -8 + -4

Combine like terms: 4 + -4 = 0
0 + 3x = -8 + -4
3x = -8 + -4

Combine like terms: -8 + -4 = -12
3x = -12

Divide each side by '3'.
x = -4

Simplifying
x = -4

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