5(d-4)=9(d-9)

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Solution for 5(d-4)=9(d-9) equation:


Simplifying
5(d + -4) = 9(d + -9)

Reorder the terms:
5(-4 + d) = 9(d + -9)
(-4 * 5 + d * 5) = 9(d + -9)
(-20 + 5d) = 9(d + -9)

Reorder the terms:
-20 + 5d = 9(-9 + d)
-20 + 5d = (-9 * 9 + d * 9)
-20 + 5d = (-81 + 9d)

Solving
-20 + 5d = -81 + 9d

Solving for variable 'd'.

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

Add '-9d' to each side of the equation.
-20 + 5d + -9d = -81 + 9d + -9d

Combine like terms: 5d + -9d = -4d
-20 + -4d = -81 + 9d + -9d

Combine like terms: 9d + -9d = 0
-20 + -4d = -81 + 0
-20 + -4d = -81

Add '20' to each side of the equation.
-20 + 20 + -4d = -81 + 20

Combine like terms: -20 + 20 = 0
0 + -4d = -81 + 20
-4d = -81 + 20

Combine like terms: -81 + 20 = -61
-4d = -61

Divide each side by '-4'.
d = 15.25

Simplifying
d = 15.25

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