Answer:
1) r = 17
2) n = -10
3) n = 7
4) n = -135
5) x = -1
6) m = -11
7) n = -7
8) x = 5
Step-by-step explanation:
1) To solve for any variable, make sure to isolate the variable
2) Next, make sure to do the same thing you do to one side of the equation the other side, so te equation is in balance
3) Finally, solve for your variable!
Hope this helps!
18 because 2 times 3 is 6 and 6x3=18
Multiply it all by ab/1
b + a = abc
subtract a on both sides and subtract abc on both sides
b - abc = -a
divide by -ac on both sides
b = -a/-ac
b = c
I hope that helps