(-5.1y)+7.2y=-8.4

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Solution for (-5.1y)+7.2y=-8.4 equation: 



(-5.1y)+7.2y=-8.4

We move all terms to the left:

(-5.1y)+7.2y-(-8.4)=0

We add all the numbers together, and all the variables

7.2y+(-5.1y)+8.4=0

We get rid of parentheses

7.2y-5.1y+8.4=0

We add all the numbers together, and all the variables

2.1y+8.4=0

We move all terms containing y to the left, all other terms to the right

2.1y=-8.4

y=-8.4/2.1

y=-4

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