2*20-y+3y=43

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Solution for 2*20-y+3y=43 equation:


Simplifying
2 * 20 + -1y + 3y = 43

Multiply 2 * 20
40 + -1y + 3y = 43

Combine like terms: -1y + 3y = 2y
40 + 2y = 43

Solving
40 + 2y = 43

Solving for variable 'y'.

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

Add '-40' to each side of the equation.
40 + -40 + 2y = 43 + -40

Combine like terms: 40 + -40 = 0
0 + 2y = 43 + -40
2y = 43 + -40

Combine like terms: 43 + -40 = 3
2y = 3

Divide each side by '2'.
y = 1.5

Simplifying
y = 1.5

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