13-19d=-4(7d-19)

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Solution for 13-19d=-4(7d-19) equation:


Simplifying
13 + -19d = -4(7d + -19)

Reorder the terms:
13 + -19d = -4(-19 + 7d)
13 + -19d = (-19 * -4 + 7d * -4)
13 + -19d = (76 + -28d)

Solving
13 + -19d = 76 + -28d

Solving for variable 'd'.

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

Add '28d' to each side of the equation.
13 + -19d + 28d = 76 + -28d + 28d

Combine like terms: -19d + 28d = 9d
13 + 9d = 76 + -28d + 28d

Combine like terms: -28d + 28d = 0
13 + 9d = 76 + 0
13 + 9d = 76

Add '-13' to each side of the equation.
13 + -13 + 9d = 76 + -13

Combine like terms: 13 + -13 = 0
0 + 9d = 76 + -13
9d = 76 + -13

Combine like terms: 76 + -13 = 63
9d = 63

Divide each side by '9'.
d = 7

Simplifying
d = 7

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