-2x-3-(4x-7)=21

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Solution for -2x-3-(4x-7)=21 equation:


Simplifying
-2x + -3 + -1(4x + -7) = 21

Reorder the terms:
-2x + -3 + -1(-7 + 4x) = 21
-2x + -3 + (-7 * -1 + 4x * -1) = 21
-2x + -3 + (7 + -4x) = 21

Reorder the terms:
-3 + 7 + -2x + -4x = 21

Combine like terms: -3 + 7 = 4
4 + -2x + -4x = 21

Combine like terms: -2x + -4x = -6x
4 + -6x = 21

Solving
4 + -6x = 21

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + -6x = 21 + -4

Combine like terms: 4 + -4 = 0
0 + -6x = 21 + -4
-6x = 21 + -4

Combine like terms: 21 + -4 = 17
-6x = 17

Divide each side by '-6'.
x = -2.833333333

Simplifying
x = -2.833333333

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