1.23=9y+4-7y

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Solution for 1.23=9y+4-7y equation: 


Simplifying
1.23 = 9y + 4 + -7y

Reorder the terms:
1.23 = 4 + 9y + -7y

Combine like terms: 9y + -7y = 2y
1.23 = 4 + 2y

Solving
1.23 = 4 + 2y

Solving for variable 'y'.

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

Add '-2y' to each side of the equation.
1.23 + -2y = 4 + 2y + -2y

Combine like terms: 2y + -2y = 0
1.23 + -2y = 4 + 0
1.23 + -2y = 4

Add '-1.23' to each side of the equation.
1.23 + -1.23 + -2y = 4 + -1.23

Combine like terms: 1.23 + -1.23 = 0.00
0.00 + -2y = 4 + -1.23
-2y = 4 + -1.23

Combine like terms: 4 + -1.23 = 2.77
-2y = 2.77

Divide each side by '-2'.
y = -1.385

Simplifying
y = -1.385

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