3x+30=10x-40

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Solution for 3x+30=10x-40 equation:


Simplifying
3x + 30 = 10x + -40

Reorder the terms:
30 + 3x = 10x + -40

Reorder the terms:
30 + 3x = -40 + 10x

Solving
30 + 3x = -40 + 10x

Solving for variable 'x'.

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

Add '-10x' to each side of the equation.
30 + 3x + -10x = -40 + 10x + -10x

Combine like terms: 3x + -10x = -7x
30 + -7x = -40 + 10x + -10x

Combine like terms: 10x + -10x = 0
30 + -7x = -40 + 0
30 + -7x = -40

Add '-30' to each side of the equation.
30 + -30 + -7x = -40 + -30

Combine like terms: 30 + -30 = 0
0 + -7x = -40 + -30
-7x = -40 + -30

Combine like terms: -40 + -30 = -70
-7x = -70

Divide each side by '-7'.
x = 10

Simplifying
x = 10

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