30=-7d+4d

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Solution for 30=-7d+4d equation:


Simplifying
30 = -7d + 4d

Combine like terms: -7d + 4d = -3d
30 = -3d

Solving
30 = -3d

Solving for variable 'd'.

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

Add '3d' to each side of the equation.
30 + 3d = -3d + 3d

Combine like terms: -3d + 3d = 0
30 + 3d = 0

Add '-30' to each side of the equation.
30 + -30 + 3d = 0 + -30

Combine like terms: 30 + -30 = 0
0 + 3d = 0 + -30
3d = 0 + -30

Combine like terms: 0 + -30 = -30
3d = -30

Divide each side by '3'.
d = -10

Simplifying
d = -10

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