20y-4(y-7)=30

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Solution for 20y-4(y-7)=30 equation:


Simplifying
20y + -4(y + -7) = 30

Reorder the terms:
20y + -4(-7 + y) = 30
20y + (-7 * -4 + y * -4) = 30
20y + (28 + -4y) = 30

Reorder the terms:
28 + 20y + -4y = 30

Combine like terms: 20y + -4y = 16y
28 + 16y = 30

Solving
28 + 16y = 30

Solving for variable 'y'.

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

Add '-28' to each side of the equation.
28 + -28 + 16y = 30 + -28

Combine like terms: 28 + -28 = 0
0 + 16y = 30 + -28
16y = 30 + -28

Combine like terms: 30 + -28 = 2
16y = 2

Divide each side by '16'.
y = 0.125

Simplifying
y = 0.125

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