28x+15(7-x)=31

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Solution for 28x+15(7-x)=31 equation:


Simplifying
28x + 15(7 + -1x) = 31
28x + (7 * 15 + -1x * 15) = 31
28x + (105 + -15x) = 31

Reorder the terms:
105 + 28x + -15x = 31

Combine like terms: 28x + -15x = 13x
105 + 13x = 31

Solving
105 + 13x = 31

Solving for variable 'x'.

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

Add '-105' to each side of the equation.
105 + -105 + 13x = 31 + -105

Combine like terms: 105 + -105 = 0
0 + 13x = 31 + -105
13x = 31 + -105

Combine like terms: 31 + -105 = -74
13x = -74

Divide each side by '13'.
x = -5.692307692

Simplifying
x = -5.692307692

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