7+9(1+5y)=-20

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Solution for 7+9(1+5y)=-20 equation:


Simplifying
7 + 9(1 + 5y) = -20
7 + (1 * 9 + 5y * 9) = -20
7 + (9 + 45y) = -20

Combine like terms: 7 + 9 = 16
16 + 45y = -20

Solving
16 + 45y = -20

Solving for variable 'y'.

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

Add '-16' to each side of the equation.
16 + -16 + 45y = -20 + -16

Combine like terms: 16 + -16 = 0
0 + 45y = -20 + -16
45y = -20 + -16

Combine like terms: -20 + -16 = -36
45y = -36

Divide each side by '45'.
y = -0.8

Simplifying
y = -0.8

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