-21x+3(3x-4)=7(4x-27)-63

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Solution for -21x+3(3x-4)=7(4x-27)-63 equation:


Simplifying
-21x + 3(3x + -4) = 7(4x + -27) + -63

Reorder the terms:
-21x + 3(-4 + 3x) = 7(4x + -27) + -63
-21x + (-4 * 3 + 3x * 3) = 7(4x + -27) + -63
-21x + (-12 + 9x) = 7(4x + -27) + -63

Reorder the terms:
-12 + -21x + 9x = 7(4x + -27) + -63

Combine like terms: -21x + 9x = -12x
-12 + -12x = 7(4x + -27) + -63

Reorder the terms:
-12 + -12x = 7(-27 + 4x) + -63
-12 + -12x = (-27 * 7 + 4x * 7) + -63
-12 + -12x = (-189 + 28x) + -63

Reorder the terms:
-12 + -12x = -189 + -63 + 28x

Combine like terms: -189 + -63 = -252
-12 + -12x = -252 + 28x

Solving
-12 + -12x = -252 + 28x

Solving for variable 'x'.

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

Add '-28x' to each side of the equation.
-12 + -12x + -28x = -252 + 28x + -28x

Combine like terms: -12x + -28x = -40x
-12 + -40x = -252 + 28x + -28x

Combine like terms: 28x + -28x = 0
-12 + -40x = -252 + 0
-12 + -40x = -252

Add '12' to each side of the equation.
-12 + 12 + -40x = -252 + 12

Combine like terms: -12 + 12 = 0
0 + -40x = -252 + 12
-40x = -252 + 12

Combine like terms: -252 + 12 = -240
-40x = -240

Divide each side by '-40'.
x = 6

Simplifying
x = 6

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