7d+9-3d=19

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Solution for 7d+9-3d=19 equation:


Simplifying
7d + 9 + -3d = 19

Reorder the terms:
9 + 7d + -3d = 19

Combine like terms: 7d + -3d = 4d
9 + 4d = 19

Solving
9 + 4d = 19

Solving for variable 'd'.

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

Add '-9' to each side of the equation.
9 + -9 + 4d = 19 + -9

Combine like terms: 9 + -9 = 0
0 + 4d = 19 + -9
4d = 19 + -9

Combine like terms: 19 + -9 = 10
4d = 10

Divide each side by '4'.
d = 2.5

Simplifying
d = 2.5

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