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

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


Simplifying
5(2x + -3) + -1(x + 4) = 21

Reorder the terms:
5(-3 + 2x) + -1(x + 4) = 21
(-3 * 5 + 2x * 5) + -1(x + 4) = 21
(-15 + 10x) + -1(x + 4) = 21

Reorder the terms:
-15 + 10x + -1(4 + x) = 21
-15 + 10x + (4 * -1 + x * -1) = 21
-15 + 10x + (-4 + -1x) = 21

Reorder the terms:
-15 + -4 + 10x + -1x = 21

Combine like terms: -15 + -4 = -19
-19 + 10x + -1x = 21

Combine like terms: 10x + -1x = 9x
-19 + 9x = 21

Solving
-19 + 9x = 21

Solving for variable 'x'.

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

Add '19' to each side of the equation.
-19 + 19 + 9x = 21 + 19

Combine like terms: -19 + 19 = 0
0 + 9x = 21 + 19
9x = 21 + 19

Combine like terms: 21 + 19 = 40
9x = 40

Divide each side by '9'.
x = 4.444444444

Simplifying
x = 4.444444444

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