5x-21=7x+45

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Solution for 5x-21=7x+45 equation:


Simplifying
5x + -21 = 7x + 45

Reorder the terms:
-21 + 5x = 7x + 45

Reorder the terms:
-21 + 5x = 45 + 7x

Solving
-21 + 5x = 45 + 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.
-21 + 5x + -7x = 45 + 7x + -7x

Combine like terms: 5x + -7x = -2x
-21 + -2x = 45 + 7x + -7x

Combine like terms: 7x + -7x = 0
-21 + -2x = 45 + 0
-21 + -2x = 45

Add '21' to each side of the equation.
-21 + 21 + -2x = 45 + 21

Combine like terms: -21 + 21 = 0
0 + -2x = 45 + 21
-2x = 45 + 21

Combine like terms: 45 + 21 = 66
-2x = 66

Divide each side by '-2'.
x = -33

Simplifying
x = -33

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