-7=50+2d

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Solution for -7=50+2d equation:


Simplifying
-7 = 50 + 2d

Solving
-7 = 50 + 2d

Solving for variable 'd'.

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

Add '-2d' to each side of the equation.
-7 + -2d = 50 + 2d + -2d

Combine like terms: 2d + -2d = 0
-7 + -2d = 50 + 0
-7 + -2d = 50

Add '7' to each side of the equation.
-7 + 7 + -2d = 50 + 7

Combine like terms: -7 + 7 = 0
0 + -2d = 50 + 7
-2d = 50 + 7

Combine like terms: 50 + 7 = 57
-2d = 57

Divide each side by '-2'.
d = -28.5

Simplifying
d = -28.5

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