30+7x=4-x

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Solution for 30+7x=4-x equation:


Simplifying
30 + 7x = 4 + -1x

Solving
30 + 7x = 4 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
30 + 7x + x = 4 + -1x + x

Combine like terms: 7x + x = 8x
30 + 8x = 4 + -1x + x

Combine like terms: -1x + x = 0
30 + 8x = 4 + 0
30 + 8x = 4

Add '-30' to each side of the equation.
30 + -30 + 8x = 4 + -30

Combine like terms: 30 + -30 = 0
0 + 8x = 4 + -30
8x = 4 + -30

Combine like terms: 4 + -30 = -26
8x = -26

Divide each side by '8'.
x = -3.25

Simplifying
x = -3.25

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