7x+40+3x+112=90

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Solution for 7x+40+3x+112=90 equation:


Simplifying
7x + 40 + 3x + 112 = 90

Reorder the terms:
40 + 112 + 7x + 3x = 90

Combine like terms: 40 + 112 = 152
152 + 7x + 3x = 90

Combine like terms: 7x + 3x = 10x
152 + 10x = 90

Solving
152 + 10x = 90

Solving for variable 'x'.

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

Add '-152' to each side of the equation.
152 + -152 + 10x = 90 + -152

Combine like terms: 152 + -152 = 0
0 + 10x = 90 + -152
10x = 90 + -152

Combine like terms: 90 + -152 = -62
10x = -62

Divide each side by '10'.
x = -6.2

Simplifying
x = -6.2

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