Problema Solution
One number is 7 more than another twice the smaller added to the larger is -20 find the smaller number
Answer provided by our tutors
let 'x' and 'y' be the numbers and x>y
One number is 7 more than another
x = y + 7
twice the smaller added to the larger is -20
2y + x = -20
if we plug x = y + 7 into the last equation we get
2y + y + 7 = -20
by solving we find
y = - 9
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the smaller number is - 9.