Answer:
y=5
Step-by-step explanation:
Y=7x-10
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Answer:
3=x
Step-by-step explanation:
11=3x+2
Answer:
x=1
Step-by-step explanation:
This stuff is quite easy in reality. Here's a little example including your numbers.

by this point we are left with simplifying it. Since it's a double negative we get a positive. Thus x=1