75-2x=7x+21

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Solution for 75-2x=7x+21 equation:


Simplifying
75 + -2x = 7x + 21

Reorder the terms:
75 + -2x = 21 + 7x

Solving
75 + -2x = 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.
75 + -2x + -7x = 21 + 7x + -7x

Combine like terms: -2x + -7x = -9x
75 + -9x = 21 + 7x + -7x

Combine like terms: 7x + -7x = 0
75 + -9x = 21 + 0
75 + -9x = 21

Add '-75' to each side of the equation.
75 + -75 + -9x = 21 + -75

Combine like terms: 75 + -75 = 0
0 + -9x = 21 + -75
-9x = 21 + -75

Combine like terms: 21 + -75 = -54
-9x = -54

Divide each side by '-9'.
x = 6

Simplifying
x = 6

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