6.7(y-16.4)-31.7=4.2(2y-2.1)

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Solution for 6.7(y-16.4)-31.7=4.2(2y-2.1) equation:


Simplifying
6.7(y + -16.4) + -31.7 = 4.2(2y + -2.1)

Reorder the terms:
6.7(-16.4 + y) + -31.7 = 4.2(2y + -2.1)
(-16.4 * 6.7 + y * 6.7) + -31.7 = 4.2(2y + -2.1)
(-109.88 + 6.7y) + -31.7 = 4.2(2y + -2.1)

Reorder the terms:
-109.88 + -31.7 + 6.7y = 4.2(2y + -2.1)

Combine like terms: -109.88 + -31.7 = -141.58
-141.58 + 6.7y = 4.2(2y + -2.1)

Reorder the terms:
-141.58 + 6.7y = 4.2(-2.1 + 2y)
-141.58 + 6.7y = (-2.1 * 4.2 + 2y * 4.2)
-141.58 + 6.7y = (-8.82 + 8.4y)

Solving
-141.58 + 6.7y = -8.82 + 8.4y

Solving for variable 'y'.

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

Add '-8.4y' to each side of the equation.
-141.58 + 6.7y + -8.4y = -8.82 + 8.4y + -8.4y

Combine like terms: 6.7y + -8.4y = -1.7y
-141.58 + -1.7y = -8.82 + 8.4y + -8.4y

Combine like terms: 8.4y + -8.4y = 0.0
-141.58 + -1.7y = -8.82 + 0.0
-141.58 + -1.7y = -8.82

Add '141.58' to each side of the equation.
-141.58 + 141.58 + -1.7y = -8.82 + 141.58

Combine like terms: -141.58 + 141.58 = 0.00
0.00 + -1.7y = -8.82 + 141.58
-1.7y = -8.82 + 141.58

Combine like terms: -8.82 + 141.58 = 132.76
-1.7y = 132.76

Divide each side by '-1.7'.
y = -78.09411765

Simplifying
y = -78.09411765

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