3x-4-5x=7(x-7)

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


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

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

Combine like terms: 3x + -5x = -2x
-4 + -2x = 7(x + -7)

Reorder the terms:
-4 + -2x = 7(-7 + x)
-4 + -2x = (-7 * 7 + x * 7)
-4 + -2x = (-49 + 7x)

Solving
-4 + -2x = -49 + 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.
-4 + -2x + -7x = -49 + 7x + -7x

Combine like terms: -2x + -7x = -9x
-4 + -9x = -49 + 7x + -7x

Combine like terms: 7x + -7x = 0
-4 + -9x = -49 + 0
-4 + -9x = -49

Add '4' to each side of the equation.
-4 + 4 + -9x = -49 + 4

Combine like terms: -4 + 4 = 0
0 + -9x = -49 + 4
-9x = -49 + 4

Combine like terms: -49 + 4 = -45
-9x = -45

Divide each side by '-9'.
x = 5

Simplifying
x = 5

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