5w(4w-3)+21=2w(10w+1)-13

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Solution for 5w(4w-3)+21=2w(10w+1)-13 equation:


Simplifying
5w(4w + -3) + 21 = 2w(10w + 1) + -13

Reorder the terms:
5w(-3 + 4w) + 21 = 2w(10w + 1) + -13
(-3 * 5w + 4w * 5w) + 21 = 2w(10w + 1) + -13
(-15w + 20w2) + 21 = 2w(10w + 1) + -13

Reorder the terms:
21 + -15w + 20w2 = 2w(10w + 1) + -13

Reorder the terms:
21 + -15w + 20w2 = 2w(1 + 10w) + -13
21 + -15w + 20w2 = (1 * 2w + 10w * 2w) + -13
21 + -15w + 20w2 = (2w + 20w2) + -13

Reorder the terms:
21 + -15w + 20w2 = -13 + 2w + 20w2

Add '-20w2' to each side of the equation.
21 + -15w + 20w2 + -20w2 = -13 + 2w + 20w2 + -20w2

Combine like terms: 20w2 + -20w2 = 0
21 + -15w + 0 = -13 + 2w + 20w2 + -20w2
21 + -15w = -13 + 2w + 20w2 + -20w2

Combine like terms: 20w2 + -20w2 = 0
21 + -15w = -13 + 2w + 0
21 + -15w = -13 + 2w

Solving
21 + -15w = -13 + 2w

Solving for variable 'w'.

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

Add '-2w' to each side of the equation.
21 + -15w + -2w = -13 + 2w + -2w

Combine like terms: -15w + -2w = -17w
21 + -17w = -13 + 2w + -2w

Combine like terms: 2w + -2w = 0
21 + -17w = -13 + 0
21 + -17w = -13

Add '-21' to each side of the equation.
21 + -21 + -17w = -13 + -21

Combine like terms: 21 + -21 = 0
0 + -17w = -13 + -21
-17w = -13 + -21

Combine like terms: -13 + -21 = -34
-17w = -34

Divide each side by '-17'.
w = 2

Simplifying
w = 2

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