7x-3(5x-4)-3y=20

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


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

Reorder the terms:
7x + -3(-4 + 5x) + -3y = 20
7x + (-4 * -3 + 5x * -3) + -3y = 20
7x + (12 + -15x) + -3y = 20

Reorder the terms:
12 + 7x + -15x + -3y = 20

Combine like terms: 7x + -15x = -8x
12 + -8x + -3y = 20

Solving
12 + -8x + -3y = 20

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-12' to each side of the equation.
12 + -8x + -12 + -3y = 20 + -12

Reorder the terms:
12 + -12 + -8x + -3y = 20 + -12

Combine like terms: 12 + -12 = 0
0 + -8x + -3y = 20 + -12
-8x + -3y = 20 + -12

Combine like terms: 20 + -12 = 8
-8x + -3y = 8

Add '3y' to each side of the equation.
-8x + -3y + 3y = 8 + 3y

Combine like terms: -3y + 3y = 0
-8x + 0 = 8 + 3y
-8x = 8 + 3y

Divide each side by '-8'.
x = -1 + -0.375y

Simplifying
x = -1 + -0.375y

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