7y+-4y=-18

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Solution for 7y+-4y=-18 equation: 



7y+-4y=-18

We move all terms to the left:

7y+-4y-(-18)=0

We add all the numbers together, and all the variables

3y+18=0

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

3y=-18

y=-18/3

y=-6

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