3(-7+-2d)-8d=7

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Solution for 3(-7+-2d)-8d=7 equation:


Simplifying
3(-7 + -2d) + -8d = 7
(-7 * 3 + -2d * 3) + -8d = 7
(-21 + -6d) + -8d = 7

Combine like terms: -6d + -8d = -14d
-21 + -14d = 7

Solving
-21 + -14d = 7

Solving for variable 'd'.

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

Add '21' to each side of the equation.
-21 + 21 + -14d = 7 + 21

Combine like terms: -21 + 21 = 0
0 + -14d = 7 + 21
-14d = 7 + 21

Combine like terms: 7 + 21 = 28
-14d = 28

Divide each side by '-14'.
d = -2

Simplifying
d = -2

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