7y-(10-y)=3(y-1)+47-2.5

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Solution for 7y-(10-y)=3(y-1)+47-2.5 equation:


Simplifying
7y + -1(10 + -1y) = 3(y + -1) + 47 + -2.5
7y + (10 * -1 + -1y * -1) = 3(y + -1) + 47 + -2.5
7y + (-10 + 1y) = 3(y + -1) + 47 + -2.5

Reorder the terms:
-10 + 7y + 1y = 3(y + -1) + 47 + -2.5

Combine like terms: 7y + 1y = 8y
-10 + 8y = 3(y + -1) + 47 + -2.5

Reorder the terms:
-10 + 8y = 3(-1 + y) + 47 + -2.5
-10 + 8y = (-1 * 3 + y * 3) + 47 + -2.5
-10 + 8y = (-3 + 3y) + 47 + -2.5

Reorder the terms:
-10 + 8y = -3 + 47 + -2.5 + 3y

Combine like terms: -3 + 47 = 44
-10 + 8y = 44 + -2.5 + 3y

Combine like terms: 44 + -2.5 = 41.5
-10 + 8y = 41.5 + 3y

Solving
-10 + 8y = 41.5 + 3y

Solving for variable 'y'.

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

Add '-3y' to each side of the equation.
-10 + 8y + -3y = 41.5 + 3y + -3y

Combine like terms: 8y + -3y = 5y
-10 + 5y = 41.5 + 3y + -3y

Combine like terms: 3y + -3y = 0
-10 + 5y = 41.5 + 0
-10 + 5y = 41.5

Add '10' to each side of the equation.
-10 + 10 + 5y = 41.5 + 10

Combine like terms: -10 + 10 = 0
0 + 5y = 41.5 + 10
5y = 41.5 + 10

Combine like terms: 41.5 + 10 = 51.5
5y = 51.5

Divide each side by '5'.
y = 10.3

Simplifying
y = 10.3

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