40=7x+12

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Solution for 40=7x+12 equation:


Simplifying
40 = 7x + 12

Reorder the terms:
40 = 12 + 7x

Solving
40 = 12 + 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.
40 + -7x = 12 + 7x + -7x

Combine like terms: 7x + -7x = 0
40 + -7x = 12 + 0
40 + -7x = 12

Add '-40' to each side of the equation.
40 + -40 + -7x = 12 + -40

Combine like terms: 40 + -40 = 0
0 + -7x = 12 + -40
-7x = 12 + -40

Combine like terms: 12 + -40 = -28
-7x = -28

Divide each side by '-7'.
x = 4

Simplifying
x = 4

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