willsmith1230 willsmith1230

27-09-2018
Mathematics

contestada

One number is 7 less than a second number. Twice the second number is 7 less than 5 times the first. Find the smaller of two numbers.

Possible answers:
6, -14, 8, 7

Respuesta :

27-09-2018

n = x-7
2x = 5n-7

2x = 5(x-7)-7
2x=5x-35-7
-3x=-42
x=14
n=7

7 is the answer

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