10x+40=7x-21

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Solution for 10x+40=7x-21 equation:


Simplifying
10x + 40 = 7x + -21

Reorder the terms:
40 + 10x = 7x + -21

Reorder the terms:
40 + 10x = -21 + 7x

Solving
40 + 10x = -21 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
40 + 10x + -7x = -21 + 7x + -7x

Combine like terms: 10x + -7x = 3x
40 + 3x = -21 + 7x + -7x

Combine like terms: 7x + -7x = 0
40 + 3x = -21 + 0
40 + 3x = -21

Add '-40' to each side of the equation.
40 + -40 + 3x = -21 + -40

Combine like terms: 40 + -40 = 0
0 + 3x = -21 + -40
3x = -21 + -40

Combine like terms: -21 + -40 = -61
3x = -61

Divide each side by '3'.
x = -20.33333333

Simplifying
x = -20.33333333

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