Question

The sum of 2 no is 24 such that 7 times the frist no added to 5times the second no is 146 find the second no

Answer 1

a + b = 24

a = 24 - b

7a + 5b = 146

7(24 - b) + 5b = 146

168 - 7b + 5b = 146

2b = 168 - 146 = 22

b = 11

a = 24 - 11 = 13

second number is 11