Question

20x + 35y =? (? x + 7y)

Answer 1

`20x + 35y = 5(4x + 7y)`

Answer 2

we are given

20x + 35y =? (? x + 7y)

Let's assume

'a' in first question mark

and

'b' in second question mark

so, we get

`20x+35y=a(bx+7y)`

now, we can distribute it

`20x+35y=abx+7ay`

now, we can compare both sides

and we get

`7a=35`

`a=5`

now, we can find b

`20=ab`

`20=5b`

`b=4`

so, we get

`a=5`

`b=4`

we can write it as

`20x+35y=5(4x+7y)`..............Answer