3+4(2x-3)-5x=21

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Solution for 3+4(2x-3)-5x=21 equation:


Simplifying
3 + 4(2x + -3) + -5x = 21

Reorder the terms:
3 + 4(-3 + 2x) + -5x = 21
3 + (-3 * 4 + 2x * 4) + -5x = 21
3 + (-12 + 8x) + -5x = 21

Combine like terms: 3 + -12 = -9
-9 + 8x + -5x = 21

Combine like terms: 8x + -5x = 3x
-9 + 3x = 21

Solving
-9 + 3x = 21

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 3x = 21 + 9

Combine like terms: -9 + 9 = 0
0 + 3x = 21 + 9
3x = 21 + 9

Combine like terms: 21 + 9 = 30
3x = 30

Divide each side by '3'.
x = 10

Simplifying
x = 10

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