Answer:
x=-1
Explanation:
12x+8-3x=-1, First add like terms.
12x-3x=9x
9x+8=-1, Next you need to get rid of +8 so you need to do -8.
9x=-9, Next divide the 9x to get x by itself.
12x+8-3x=1
9x=-7
x = -7/9
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