-10(7+d)=30

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Solution for -10(7+d)=30 equation: 


Simplifying
-10(7 + d) = 30
(7 * -10 + d * -10) = 30
(-70 + -10d) = 30

Solving
-70 + -10d = 30

Solving for variable 'd'.

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

Add '70' to each side of the equation.
-70 + 70 + -10d = 30 + 70

Combine like terms: -70 + 70 = 0
0 + -10d = 30 + 70
-10d = 30 + 70

Combine like terms: 30 + 70 = 100
-10d = 100

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

Simplifying
d = -10

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