12+5=7x+40

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Solution for 12+5=7x+40 equation:


Simplifying
12 + 5 = 7x + 40

Combine like terms: 12 + 5 = 17
17 = 7x + 40

Reorder the terms:
17 = 40 + 7x

Solving
17 = 40 + 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.
17 + -7x = 40 + 7x + -7x

Combine like terms: 7x + -7x = 0
17 + -7x = 40 + 0
17 + -7x = 40

Add '-17' to each side of the equation.
17 + -17 + -7x = 40 + -17

Combine like terms: 17 + -17 = 0
0 + -7x = 40 + -17
-7x = 40 + -17

Combine like terms: 40 + -17 = 23
-7x = 23

Divide each side by '-7'.
x = -3.285714286

Simplifying
x = -3.285714286

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