61-3x=7x+21

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Solution for 61-3x=7x+21 equation:


Simplifying
61 + -3x = 7x + 21

Reorder the terms:
61 + -3x = 21 + 7x

Solving
61 + -3x = 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.
61 + -3x + -7x = 21 + 7x + -7x

Combine like terms: -3x + -7x = -10x
61 + -10x = 21 + 7x + -7x

Combine like terms: 7x + -7x = 0
61 + -10x = 21 + 0
61 + -10x = 21

Add '-61' to each side of the equation.
61 + -61 + -10x = 21 + -61

Combine like terms: 61 + -61 = 0
0 + -10x = 21 + -61
-10x = 21 + -61

Combine like terms: 21 + -61 = -40
-10x = -40

Divide each side by '-10'.
x = 4

Simplifying
x = 4

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