3(20+y)-2(5+2y)=40

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Solution for 3(20+y)-2(5+2y)=40 equation:


Simplifying
3(20 + y) + -2(5 + 2y) = 40
(20 * 3 + y * 3) + -2(5 + 2y) = 40
(60 + 3y) + -2(5 + 2y) = 40
60 + 3y + (5 * -2 + 2y * -2) = 40
60 + 3y + (-10 + -4y) = 40

Reorder the terms:
60 + -10 + 3y + -4y = 40

Combine like terms: 60 + -10 = 50
50 + 3y + -4y = 40

Combine like terms: 3y + -4y = -1y
50 + -1y = 40

Solving
50 + -1y = 40

Solving for variable 'y'.

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

Add '-50' to each side of the equation.
50 + -50 + -1y = 40 + -50

Combine like terms: 50 + -50 = 0
0 + -1y = 40 + -50
-1y = 40 + -50

Combine like terms: 40 + -50 = -10
-1y = -10

Divide each side by '-1'.
y = 10

Simplifying
y = 10

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