-7=5y+4(-4+9)-7(7+3y)

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Solution for -7=5y+4(-4+9)-7(7+3y) equation:


Simplifying
-7 = 5y + 4(-4 + 9) + -7(7 + 3y)

Combine like terms: -4 + 9 = 5
-7 = 5y + 4(5) + -7(7 + 3y)

Multiply 4 * 5
-7 = 5y + 20 + -7(7 + 3y)
-7 = 5y + 20 + (7 * -7 + 3y * -7)
-7 = 5y + 20 + (-49 + -21y)

Reorder the terms:
-7 = 20 + -49 + 5y + -21y

Combine like terms: 20 + -49 = -29
-7 = -29 + 5y + -21y

Combine like terms: 5y + -21y = -16y
-7 = -29 + -16y

Solving
-7 = -29 + -16y

Solving for variable 'y'.

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

Add '16y' to each side of the equation.
-7 + 16y = -29 + -16y + 16y

Combine like terms: -16y + 16y = 0
-7 + 16y = -29 + 0
-7 + 16y = -29

Add '7' to each side of the equation.
-7 + 7 + 16y = -29 + 7

Combine like terms: -7 + 7 = 0
0 + 16y = -29 + 7
16y = -29 + 7

Combine like terms: -29 + 7 = -22
16y = -22

Divide each side by '16'.
y = -1.375

Simplifying
y = -1.375

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