70+70+3d+2+3d+2+20=180

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Solution for 70+70+3d+2+3d+2+20=180 equation: 


Simplifying
70 + 70 + 3d + 2 + 3d + 2 + 20 = 180

Reorder the terms:
70 + 70 + 2 + 2 + 20 + 3d + 3d = 180

Combine like terms: 70 + 70 = 140
140 + 2 + 2 + 20 + 3d + 3d = 180

Combine like terms: 140 + 2 = 142
142 + 2 + 20 + 3d + 3d = 180

Combine like terms: 142 + 2 = 144
144 + 20 + 3d + 3d = 180

Combine like terms: 144 + 20 = 164
164 + 3d + 3d = 180

Combine like terms: 3d + 3d = 6d
164 + 6d = 180

Solving
164 + 6d = 180

Solving for variable 'd'.

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

Add '-164' to each side of the equation.
164 + -164 + 6d = 180 + -164

Combine like terms: 164 + -164 = 0
0 + 6d = 180 + -164
6d = 180 + -164

Combine like terms: 180 + -164 = 16
6d = 16

Divide each side by '6'.
d = 2.666666667

Simplifying
d = 2.666666667

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