3=7(4+-2u)-6u

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Solution for 3=7(4+-2u)-6u equation:


Simplifying
3 = 7(4 + -2u) + -6u
3 = (4 * 7 + -2u * 7) + -6u
3 = (28 + -14u) + -6u

Combine like terms: -14u + -6u = -20u
3 = 28 + -20u

Solving
3 = 28 + -20u

Solving for variable 'u'.

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

Add '20u' to each side of the equation.
3 + 20u = 28 + -20u + 20u

Combine like terms: -20u + 20u = 0
3 + 20u = 28 + 0
3 + 20u = 28

Add '-3' to each side of the equation.
3 + -3 + 20u = 28 + -3

Combine like terms: 3 + -3 = 0
0 + 20u = 28 + -3
20u = 28 + -3

Combine like terms: 28 + -3 = 25
20u = 25

Divide each side by '20'.
u = 1.25

Simplifying
u = 1.25

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