3(-7)=5(3x-1)-2(4x-8)

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Solution for 3(-7)=5(3x-1)-2(4x-8) equation:


Simplifying
3(-7) = 5(3x + -1) + -2(4x + -8)

Multiply 3 * -7
-21 = 5(3x + -1) + -2(4x + -8)

Reorder the terms:
-21 = 5(-1 + 3x) + -2(4x + -8)
-21 = (-1 * 5 + 3x * 5) + -2(4x + -8)
-21 = (-5 + 15x) + -2(4x + -8)

Reorder the terms:
-21 = -5 + 15x + -2(-8 + 4x)
-21 = -5 + 15x + (-8 * -2 + 4x * -2)
-21 = -5 + 15x + (16 + -8x)

Reorder the terms:
-21 = -5 + 16 + 15x + -8x

Combine like terms: -5 + 16 = 11
-21 = 11 + 15x + -8x

Combine like terms: 15x + -8x = 7x
-21 = 11 + 7x

Solving
-21 = 11 + 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 + -7x = 11 + 7x + -7x

Combine like terms: 7x + -7x = 0
-21 + -7x = 11 + 0
-21 + -7x = 11

Add '21' to each side of the equation.
-21 + 21 + -7x = 11 + 21

Combine like terms: -21 + 21 = 0
0 + -7x = 11 + 21
-7x = 11 + 21

Combine like terms: 11 + 21 = 32
-7x = 32

Divide each side by '-7'.
x = -4.571428571

Simplifying
x = -4.571428571

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