10n-17n=-7 (subtract the two since they have the same variable, you would not be able to do this if the variables were different)
-7n=-7 (divide by the coefficient of n or in this case -7)
n=1
10n +(-17n)=-7+(-17n) = -17n positive . negative = negativetherefore:10n-17n=-7-7n=-7 divide both sides by -7-7n/-7= -7/-7 remember that both negative in above and below the division line will cancel each other. so:n=1 hope it helps, Good luck
First you would add the two n terms, which are 10n and -17n. Then the equation would look like this: -7n = -7. Then you would divide by -7 in order to single out the n. n is now equal to 1.
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