3x+55=7x+15

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Solution for 3x+55=7x+15 equation:


Simplifying
3x + 55 = 7x + 15

Reorder the terms:
55 + 3x = 7x + 15

Reorder the terms:
55 + 3x = 15 + 7x

Solving
55 + 3x = 15 + 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.
55 + 3x + -7x = 15 + 7x + -7x

Combine like terms: 3x + -7x = -4x
55 + -4x = 15 + 7x + -7x

Combine like terms: 7x + -7x = 0
55 + -4x = 15 + 0
55 + -4x = 15

Add '-55' to each side of the equation.
55 + -55 + -4x = 15 + -55

Combine like terms: 55 + -55 = 0
0 + -4x = 15 + -55
-4x = 15 + -55

Combine like terms: 15 + -55 = -40
-4x = -40

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

Simplifying
x = 10

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