3+-2(X-21)=-76-X

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Solution for 3+-2(X-21)=-76-X equation:


Simplifying
3 + -2(X + -21) = -76 + -1X

Reorder the terms:
3 + -2(-21 + X) = -76 + -1X
3 + (-21 * -2 + X * -2) = -76 + -1X
3 + (42 + -2X) = -76 + -1X

Combine like terms: 3 + 42 = 45
45 + -2X = -76 + -1X

Solving
45 + -2X = -76 + -1X

Solving for variable 'X'.

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

Add 'X' to each side of the equation.
45 + -2X + X = -76 + -1X + X

Combine like terms: -2X + X = -1X
45 + -1X = -76 + -1X + X

Combine like terms: -1X + X = 0
45 + -1X = -76 + 0
45 + -1X = -76

Add '-45' to each side of the equation.
45 + -45 + -1X = -76 + -45

Combine like terms: 45 + -45 = 0
0 + -1X = -76 + -45
-1X = -76 + -45

Combine like terms: -76 + -45 = -121
-1X = -121

Divide each side by '-1'.
X = 121

Simplifying
X = 121

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