Question

Simplify by combining like terms 6a + 3b + a + 2

Answer 1

`7a+3b+2`

Explanation:

`6a+3b+a+2`

Use commutative property of addition
`x+y=y+x`

`6a+3b+a+2=6a+(a+3b)+2`

use associative property of addition
`x+(y+2)=(x+y)+2`

`6a+(a+3b)+2=(6a+a)+3b+2\\=7a+3b+2`

Hence
`6a+3b+a+2=7a+3b+2`