7x+12+9x-4=45

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Solution for 7x+12+9x-4=45 equation:


Simplifying
7x + 12 + 9x + -4 = 45

Reorder the terms:
12 + -4 + 7x + 9x = 45

Combine like terms: 12 + -4 = 8
8 + 7x + 9x = 45

Combine like terms: 7x + 9x = 16x
8 + 16x = 45

Solving
8 + 16x = 45

Solving for variable 'x'.

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

Add '-8' to each side of the equation.
8 + -8 + 16x = 45 + -8

Combine like terms: 8 + -8 = 0
0 + 16x = 45 + -8
16x = 45 + -8

Combine like terms: 45 + -8 = 37
16x = 37

Divide each side by '16'.
x = 2.3125

Simplifying
x = 2.3125

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