150-7d=120-5d

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Solution for 150-7d=120-5d equation:


Simplifying
150 + -7d = 120 + -5d

Solving
150 + -7d = 120 + -5d

Solving for variable 'd'.

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

Add '5d' to each side of the equation.
150 + -7d + 5d = 120 + -5d + 5d

Combine like terms: -7d + 5d = -2d
150 + -2d = 120 + -5d + 5d

Combine like terms: -5d + 5d = 0
150 + -2d = 120 + 0
150 + -2d = 120

Add '-150' to each side of the equation.
150 + -150 + -2d = 120 + -150

Combine like terms: 150 + -150 = 0
0 + -2d = 120 + -150
-2d = 120 + -150

Combine like terms: 120 + -150 = -30
-2d = -30

Divide each side by '-2'.
d = 15

Simplifying
d = 15

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