Question

Solve each equation
1. 3/8=x/30
2. 7/5=k/18
3. 4/6=m/9
4. 5/9=8/w

Answer 1

1.
`(3)/(8) =(x)/(30)` Multiply 30 on both sides

`(3)/(8) (30)=(x)/(30)(30)`

`(90)/(8) = x`

`(45)/(4) = x`

2.
`(7)/(5) =(k)/(18)` Multiply 18 on both sides

`(7)/(5)(18)= (k)/(18) (18)`

`(126)/(5)=k`

3.
`(4)/(6)= (m)/(9)` Multiply 9 on both sides

`(4)/(6)(9)= (m)/(9)(9)`

`(36)/(6) =m`

6 = m

4.
`(5)/(9) = (8)/(w)` Multiply w on both sides

`(5)/(9) (w)=(8)/(w) (w)`

`(5)/(9)w = 8` Multiply 9/5 on both sides

`((9)/(5) )(5)/(9)w=8( (9)/(5))`

`w = (72)/(5)`