If any1 could me with a step by step on factor by grouping when a is not 1 ?

this is how I would solve this problem, hope it helps

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

a box 3 3/4 feet long or 4+ feet.

step-by-step explanation: