3+12=7x-18

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Solution for 3+12=7x-18 equation:


Simplifying
3 + 12 = 7x + -18

Combine like terms: 3 + 12 = 15
15 = 7x + -18

Reorder the terms:
15 = -18 + 7x

Solving
15 = -18 + 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.
15 + -7x = -18 + 7x + -7x

Combine like terms: 7x + -7x = 0
15 + -7x = -18 + 0
15 + -7x = -18

Add '-15' to each side of the equation.
15 + -15 + -7x = -18 + -15

Combine like terms: 15 + -15 = 0
0 + -7x = -18 + -15
-7x = -18 + -15

Combine like terms: -18 + -15 = -33
-7x = -33

Divide each side by '-7'.
x = 4.714285714

Simplifying
x = 4.714285714

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