7y + 6 - 1 + 12y equals what

1 answer:

6 0

19y +5
Add like terms together, the like terms are 12y & 7y, and the other like terms are 6 and -1. You can't find the specific number because you do not know x, therefore you write it as an equation.

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Solve using substitution.<br> y = -10x-10<br> y = -3x + 4

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-10x-10 = -3x+4
+3x +3x
————————
-7x-10 = 4
+10 +10
————————
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then divide -7 on both side of the equal sign
you’ll get x=-2

then plug in -2 as x into one of the equations ( it doesn’t matter which one)

y= -10(-2)-10 = 20-10= 10

so y=10

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