y-(-21)-42=0

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Solution for y-(-21)-42=0 equation:


Simplifying
y + -1(-21) + -42 = 0

Multiply -1 * -21
y + 21 + -42 = 0

Reorder the terms:
21 + -42 + y = 0

Combine like terms: 21 + -42 = -21
-21 + y = 0

Solving
-21 + y = 0

Solving for variable 'y'.

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

Add '21' to each side of the equation.
-21 + 21 + y = 0 + 21

Combine like terms: -21 + 21 = 0
0 + y = 0 + 21
y = 0 + 21

Combine like terms: 0 + 21 = 21
y = 21

Simplifying
y = 21

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