8+5(1-2d)=-21

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Solution for 8+5(1-2d)=-21 equation:


Simplifying
8 + 5(1 + -2d) = -21
8 + (1 * 5 + -2d * 5) = -21
8 + (5 + -10d) = -21

Combine like terms: 8 + 5 = 13
13 + -10d = -21

Solving
13 + -10d = -21

Solving for variable 'd'.

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

Add '-13' to each side of the equation.
13 + -13 + -10d = -21 + -13

Combine like terms: 13 + -13 = 0
0 + -10d = -21 + -13
-10d = -21 + -13

Combine like terms: -21 + -13 = -34
-10d = -34

Divide each side by '-10'.
d = 3.4

Simplifying
d = 3.4

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