9-2(1+4d)=-25

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Solution for 9-2(1+4d)=-25 equation:


Simplifying
9 + -2(1 + 4d) = -25
9 + (1 * -2 + 4d * -2) = -25
9 + (-2 + -8d) = -25

Combine like terms: 9 + -2 = 7
7 + -8d = -25

Solving
7 + -8d = -25

Solving for variable 'd'.

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

Add '-7' to each side of the equation.
7 + -7 + -8d = -25 + -7

Combine like terms: 7 + -7 = 0
0 + -8d = -25 + -7
-8d = -25 + -7

Combine like terms: -25 + -7 = -32
-8d = -32

Divide each side by '-8'.
d = 4

Simplifying
d = 4

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