0.8(4y-9)-1.9y=0.8(4y)-0.8(9)-1.9y

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Solution for 0.8(4y-9)-1.9y=0.8(4y)-0.8(9)-1.9y equation:


Simplifying
0.8(4y + -9) + -1.9y = 0.8(4y) + -0.8(9) + -1.9y

Reorder the terms:
0.8(-9 + 4y) + -1.9y = 0.8(4y) + -0.8(9) + -1.9y
(-9 * 0.8 + 4y * 0.8) + -1.9y = 0.8(4y) + -0.8(9) + -1.9y
(-7.2 + 3.2y) + -1.9y = 0.8(4y) + -0.8(9) + -1.9y

Combine like terms: 3.2y + -1.9y = 1.3y
-7.2 + 1.3y = 0.8(4y) + -0.8(9) + -1.9y

Remove parenthesis around (4y)
-7.2 + 1.3y = 0.8 * 4y + -0.8(9) + -1.9y

Multiply 0.8 * 4
-7.2 + 1.3y = 3.2y + -0.8(9) + -1.9y

Multiply -0.8 * 9
-7.2 + 1.3y = 3.2y + -7.2 + -1.9y

Reorder the terms:
-7.2 + 1.3y = -7.2 + 3.2y + -1.9y

Combine like terms: 3.2y + -1.9y = 1.3y
-7.2 + 1.3y = -7.2 + 1.3y

Add '7.2' to each side of the equation.
-7.2 + 7.2 + 1.3y = -7.2 + 7.2 + 1.3y

Combine like terms: -7.2 + 7.2 = 0.0
0.0 + 1.3y = -7.2 + 7.2 + 1.3y
1.3y = -7.2 + 7.2 + 1.3y

Combine like terms: -7.2 + 7.2 = 0.0
1.3y = 0.0 + 1.3y
1.3y = 1.3y

Add '-1.3y' to each side of the equation.
1.3y + -1.3y = 1.3y + -1.3y

Combine like terms: 1.3y + -1.3y = 0.0
0.0 = 1.3y + -1.3y

Combine like terms: 1.3y + -1.3y = 0.0
0.0 = 0.0

Solving
0.0 = 0.0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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