Question 148180
The sum of two numbers is 73.  The second is 7 more than 5 times the first.  What are the two numbers?
Let's call them N1 and N2.
N1 + N2 = 73
N2 = 5*N1 + 7
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Sub for N2 in the 1st equation
N1 + 5*N1+7 = 73
6*N1 + 7 = 73
6*N1 = 66
N1 = 11
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N2 = 73-11 = 62
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It all fits.