18*0.83-21y=15

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Solution for 18*0.83-21y=15 equation: 


Simplifying
18 * 0.83 + -21y = 15

Multiply 18 * 0.83
14.94 + -21y = 15

Solving
14.94 + -21y = 15

Solving for variable 'y'.

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

Add '-14.94' to each side of the equation.
14.94 + -14.94 + -21y = 15 + -14.94

Combine like terms: 14.94 + -14.94 = 0.00
0.00 + -21y = 15 + -14.94
-21y = 15 + -14.94

Combine like terms: 15 + -14.94 = 0.06
-21y = 0.06

Divide each side by '-21'.
y = -0.002857142857

Simplifying
y = -0.002857142857

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