2(3-y)+7(2-y)=15-4y

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Solution for 2(3-y)+7(2-y)=15-4y equation:


Simplifying
2(3 + -1y) + 7(2 + -1y) = 15 + -4y
(3 * 2 + -1y * 2) + 7(2 + -1y) = 15 + -4y
(6 + -2y) + 7(2 + -1y) = 15 + -4y
6 + -2y + (2 * 7 + -1y * 7) = 15 + -4y
6 + -2y + (14 + -7y) = 15 + -4y

Reorder the terms:
6 + 14 + -2y + -7y = 15 + -4y

Combine like terms: 6 + 14 = 20
20 + -2y + -7y = 15 + -4y

Combine like terms: -2y + -7y = -9y
20 + -9y = 15 + -4y

Solving
20 + -9y = 15 + -4y

Solving for variable 'y'.

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

Add '4y' to each side of the equation.
20 + -9y + 4y = 15 + -4y + 4y

Combine like terms: -9y + 4y = -5y
20 + -5y = 15 + -4y + 4y

Combine like terms: -4y + 4y = 0
20 + -5y = 15 + 0
20 + -5y = 15

Add '-20' to each side of the equation.
20 + -20 + -5y = 15 + -20

Combine like terms: 20 + -20 = 0
0 + -5y = 15 + -20
-5y = 15 + -20

Combine like terms: 15 + -20 = -5
-5y = -5

Divide each side by '-5'.
y = 1

Simplifying
y = 1

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