21y=-2(1-10y)

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Solution for 21y=-2(1-10y) equation: 


Simplifying
21y = -2(1 + -10y)
21y = (1 * -2 + -10y * -2)
21y = (-2 + 20y)

Solving
21y = -2 + 20y

Solving for variable 'y'.

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

Add '-20y' to each side of the equation.
21y + -20y = -2 + 20y + -20y

Combine like terms: 21y + -20y = 1y
1y = -2 + 20y + -20y

Combine like terms: 20y + -20y = 0
1y = -2 + 0
1y = -2

Divide each side by '1'.
y = -2

Simplifying
y = -2

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