-(1+4y)-7y=21

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Solution for -(1+4y)-7y=21 equation:


Simplifying
-1(1 + 4y) + -7y = 21
(1 * -1 + 4y * -1) + -7y = 21
(-1 + -4y) + -7y = 21

Combine like terms: -4y + -7y = -11y
-1 + -11y = 21

Solving
-1 + -11y = 21

Solving for variable 'y'.

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

Add '1' to each side of the equation.
-1 + 1 + -11y = 21 + 1

Combine like terms: -1 + 1 = 0
0 + -11y = 21 + 1
-11y = 21 + 1

Combine like terms: 21 + 1 = 22
-11y = 22

Divide each side by '-11'.
y = -2

Simplifying
y = -2

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