7(81d+48)=21-9(-64d+57)

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Solution for 7(81d+48)=21-9(-64d+57) equation:


Simplifying
7(81d + 48) = 21 + -9(-64d + 57)

Reorder the terms:
7(48 + 81d) = 21 + -9(-64d + 57)
(48 * 7 + 81d * 7) = 21 + -9(-64d + 57)
(336 + 567d) = 21 + -9(-64d + 57)

Reorder the terms:
336 + 567d = 21 + -9(57 + -64d)
336 + 567d = 21 + (57 * -9 + -64d * -9)
336 + 567d = 21 + (-513 + 576d)

Combine like terms: 21 + -513 = -492
336 + 567d = -492 + 576d

Solving
336 + 567d = -492 + 576d

Solving for variable 'd'.

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

Add '-576d' to each side of the equation.
336 + 567d + -576d = -492 + 576d + -576d

Combine like terms: 567d + -576d = -9d
336 + -9d = -492 + 576d + -576d

Combine like terms: 576d + -576d = 0
336 + -9d = -492 + 0
336 + -9d = -492

Add '-336' to each side of the equation.
336 + -336 + -9d = -492 + -336

Combine like terms: 336 + -336 = 0
0 + -9d = -492 + -336
-9d = -492 + -336

Combine like terms: -492 + -336 = -828
-9d = -828

Divide each side by '-9'.
d = 92

Simplifying
d = 92

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