Question

Answer 1

`a)4x+18:2=13`

`4x+9=13`

`4x=13-9=4`

`x=4:4=1`

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`b)130-(100+x)=25`

`100+x=130-25=105`

`x=105-100=5`

Answer 2

`a) 4x +18:2 =13`

`4x + 9 =13`

`4x = 13-9 =4`

`x=4/4 =1`

`b) 130 -(100+x) =25`

`100+x = 130-25 =105`

`x =105-100=5`