Question

2/7x + 1/5x = 34 x= what?

Answer 1

70

Explanation:

`(2)/(7)x +(1)/(5)x=34`

We need to combine like terms but since they are fractions we first need to find a common denominator. The common multiple of 5 and 7 is 35 so we need to multiply 7 by 5 and 5 by 7, but we have to do the same to the numerator too.

`(2*5)/(7*5) +(1*7)/(5*7)`

`(10)/(35)x+(7)/(35) x=34`

Combine like terms

`(17)/(35)x=34`

Divide 34 by
`(17)/(35)`

`(34)/(1) *(35)/(17) =(1190)/(17) =70`