40=7x+x+8

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Solution for 40=7x+x+8 equation: 


Simplifying
40 = 7x + x + 8

Reorder the terms:
40 = 8 + 7x + x

Combine like terms: 7x + x = 8x
40 = 8 + 8x

Solving
40 = 8 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
40 + -8x = 8 + 8x + -8x

Combine like terms: 8x + -8x = 0
40 + -8x = 8 + 0
40 + -8x = 8

Add '-40' to each side of the equation.
40 + -40 + -8x = 8 + -40

Combine like terms: 40 + -40 = 0
0 + -8x = 8 + -40
-8x = 8 + -40

Combine like terms: 8 + -40 = -32
-8x = -32

Divide each side by '-8'.
x = 4

Simplifying
x = 4

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