3(30+d)=4(d+19)

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Solution for 3(30+d)=4(d+19) equation:


Simplifying
3(30 + d) = 4(d + 19)
(30 * 3 + d * 3) = 4(d + 19)
(90 + 3d) = 4(d + 19)

Reorder the terms:
90 + 3d = 4(19 + d)
90 + 3d = (19 * 4 + d * 4)
90 + 3d = (76 + 4d)

Solving
90 + 3d = 76 + 4d

Solving for variable 'd'.

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

Add '-4d' to each side of the equation.
90 + 3d + -4d = 76 + 4d + -4d

Combine like terms: 3d + -4d = -1d
90 + -1d = 76 + 4d + -4d

Combine like terms: 4d + -4d = 0
90 + -1d = 76 + 0
90 + -1d = 76

Add '-90' to each side of the equation.
90 + -90 + -1d = 76 + -90

Combine like terms: 90 + -90 = 0
0 + -1d = 76 + -90
-1d = 76 + -90

Combine like terms: 76 + -90 = -14
-1d = -14

Divide each side by '-1'.
d = 14

Simplifying
d = 14

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