A)11
B)0.1875
Explanation:
2x+7=15
2x+7-7=15+7
2x=22
2x/2=22/2
3.4x+8=-12
3/4x+8-8=-12+8
3/4x=-4
3/4divided by 3/4=-4 divided by 3/4
x=0.1875
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