7x-15=3x+5+4(x-20)

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Solution for 7x-15=3x+5+4(x-20) equation:


Simplifying
7x + -15 = 3x + 5 + 4(x + -20)

Reorder the terms:
-15 + 7x = 3x + 5 + 4(x + -20)

Reorder the terms:
-15 + 7x = 3x + 5 + 4(-20 + x)
-15 + 7x = 3x + 5 + (-20 * 4 + x * 4)
-15 + 7x = 3x + 5 + (-80 + 4x)

Reorder the terms:
-15 + 7x = 5 + -80 + 3x + 4x

Combine like terms: 5 + -80 = -75
-15 + 7x = -75 + 3x + 4x

Combine like terms: 3x + 4x = 7x
-15 + 7x = -75 + 7x

Add '-7x' to each side of the equation.
-15 + 7x + -7x = -75 + 7x + -7x

Combine like terms: 7x + -7x = 0
-15 + 0 = -75 + 7x + -7x
-15 = -75 + 7x + -7x

Combine like terms: 7x + -7x = 0
-15 = -75 + 0
-15 = -75

Solving
-15 = -75

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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