7(0.1d-1)=d+5

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Solution for 7(0.1d-1)=d+5 equation:


Simplifying
7(0.1d + -1) = d + 5

Reorder the terms:
7(-1 + 0.1d) = d + 5
(-1 * 7 + 0.1d * 7) = d + 5
(-7 + 0.7d) = d + 5

Reorder the terms:
-7 + 0.7d = 5 + d

Solving
-7 + 0.7d = 5 + d

Solving for variable 'd'.

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

Add '-1d' to each side of the equation.
-7 + 0.7d + -1d = 5 + d + -1d

Combine like terms: 0.7d + -1d = -0.3d
-7 + -0.3d = 5 + d + -1d

Combine like terms: d + -1d = 0
-7 + -0.3d = 5 + 0
-7 + -0.3d = 5

Add '7' to each side of the equation.
-7 + 7 + -0.3d = 5 + 7

Combine like terms: -7 + 7 = 0
0 + -0.3d = 5 + 7
-0.3d = 5 + 7

Combine like terms: 5 + 7 = 12
-0.3d = 12

Divide each side by '-0.3'.
d = -40

Simplifying
d = -40

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