7x-31=9(x-3)

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Solution for 7x-31=9(x-3) equation:


Simplifying
7x + -31 = 9(x + -3)

Reorder the terms:
-31 + 7x = 9(x + -3)

Reorder the terms:
-31 + 7x = 9(-3 + x)
-31 + 7x = (-3 * 9 + x * 9)
-31 + 7x = (-27 + 9x)

Solving
-31 + 7x = -27 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
-31 + 7x + -9x = -27 + 9x + -9x

Combine like terms: 7x + -9x = -2x
-31 + -2x = -27 + 9x + -9x

Combine like terms: 9x + -9x = 0
-31 + -2x = -27 + 0
-31 + -2x = -27

Add '31' to each side of the equation.
-31 + 31 + -2x = -27 + 31

Combine like terms: -31 + 31 = 0
0 + -2x = -27 + 31
-2x = -27 + 31

Combine like terms: -27 + 31 = 4
-2x = 4

Divide each side by '-2'.
x = -2

Simplifying
x = -2

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