Answer:
2, and 3
Step-by-step explanation:
equation 1 is incorrect, because (common sense)
equation 2 is correct, 15 zero times =0, because it's like it was never there.
equation 3 is correct because 1.4+2.7 is = to 4.1
equation 4 is incorrect because the answer would correctly be 10/27
x = -12
y = 3
A
Answer:%28a-b%29%2Fb=c
a-b=bc
a=bc%2Bb
a=b%28c%2B1%29
a%2F%28c%2B1%29=b
b=a%2F%28c%2B1%29
So the answer is b=a%2F%28c%2B1%29
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3x-x+2=4
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