8x+1+2x-4=7x+21

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Solution for 8x+1+2x-4=7x+21 equation:


Simplifying
8x + 1 + 2x + -4 = 7x + 21

Reorder the terms:
1 + -4 + 8x + 2x = 7x + 21

Combine like terms: 1 + -4 = -3
-3 + 8x + 2x = 7x + 21

Combine like terms: 8x + 2x = 10x
-3 + 10x = 7x + 21

Reorder the terms:
-3 + 10x = 21 + 7x

Solving
-3 + 10x = 21 + 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.
-3 + 10x + -7x = 21 + 7x + -7x

Combine like terms: 10x + -7x = 3x
-3 + 3x = 21 + 7x + -7x

Combine like terms: 7x + -7x = 0
-3 + 3x = 21 + 0
-3 + 3x = 21

Add '3' to each side of the equation.
-3 + 3 + 3x = 21 + 3

Combine like terms: -3 + 3 = 0
0 + 3x = 21 + 3
3x = 21 + 3

Combine like terms: 21 + 3 = 24
3x = 24

Divide each side by '3'.
x = 8

Simplifying
x = 8

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