4x-(-21)=6x-(7-13)

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Solution for 4x-(-21)=6x-(7-13) equation:


Simplifying
4x + -1(-21) = 6x + -1(7 + -13)

Multiply -1 * -21
4x + 21 = 6x + -1(7 + -13)

Reorder the terms:
21 + 4x = 6x + -1(7 + -13)

Combine like terms: 7 + -13 = -6
21 + 4x = 6x + -1(-6)

Multiply -1 * -6
21 + 4x = 6x + 6

Reorder the terms:
21 + 4x = 6 + 6x

Solving
21 + 4x = 6 + 6x

Solving for variable 'x'.

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

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

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

Combine like terms: 6x + -6x = 0
21 + -2x = 6 + 0
21 + -2x = 6

Add '-21' to each side of the equation.
21 + -21 + -2x = 6 + -21

Combine like terms: 21 + -21 = 0
0 + -2x = 6 + -21
-2x = 6 + -21

Combine like terms: 6 + -21 = -15
-2x = -15

Divide each side by '-2'.
x = 7.5

Simplifying
x = 7.5

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