3*7-1*4y=1*2

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Solution for 3*7-1*4y=1*2 equation: 


Simplifying
3 * 7 + -1 * 4y = 1 * 2

Multiply 3 * 7
21 + -1 * 4y = 1 * 2

Multiply -1 * 4
21 + -4y = 1 * 2

Multiply 1 * 2
21 + -4y = 2

Solving
21 + -4y = 2

Solving for variable 'y'.

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

Add '-21' to each side of the equation.
21 + -21 + -4y = 2 + -21

Combine like terms: 21 + -21 = 0
0 + -4y = 2 + -21
-4y = 2 + -21

Combine like terms: 2 + -21 = -19
-4y = -19

Divide each side by '-4'.
y = 4.75

Simplifying
y = 4.75

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