Question

Tanisha has 7 less than 4 times as many toy cars as Fernado. If Tanisha has 9 cars, How do you write and solve an equation to find how many toy cars Fernando has?

Answer 1

see a solution process below;

Explanation:

We can say let Fernado's toy cars be represented by `x`

Tanisha has `7` less than `4` times as many toys cars as Fernado..

Since Fernado's toy cars `= x`

Hence;

Tanisha toy cars `= 4x - 7`

So since Tanisha has 9 toy car's

Therefore;

`rArr 4x - 7 = 9`

`4x - 7 = 9`

`4x - 7 + 7 = 9 + 7 -> "adding 7 to both sides"`

`4x = 16`

`(4x)/4 = 16/4 -> "dividing both sides by 4"`

`(cancel4x)/cancel4 = 16/4`

`x = 16/4`

`x = 4`

Since, Fernado's toy cars `rArr x = 4`

Hence, Fernado's has `4` toy cars..