2(87-4y)+3y=84

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Solution for 2(87-4y)+3y=84 equation:


Simplifying
2(87 + -4y) + 3y = 84
(87 * 2 + -4y * 2) + 3y = 84
(174 + -8y) + 3y = 84

Combine like terms: -8y + 3y = -5y
174 + -5y = 84

Solving
174 + -5y = 84

Solving for variable 'y'.

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

Add '-174' to each side of the equation.
174 + -174 + -5y = 84 + -174

Combine like terms: 174 + -174 = 0
0 + -5y = 84 + -174
-5y = 84 + -174

Combine like terms: 84 + -174 = -90
-5y = -90

Divide each side by '-5'.
y = 18

Simplifying
y = 18

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