Question

How do you simplify `9(2z+6)+(z+3)+3(10z+12)`?

Answer 1

`9(2z+6)+(z+3)+3(10z+12)=49z+93`

Explanation:

`9(2z+6)+(z+3)+3(10z+12)`
`=9xx2(z+3)+(z+3)+3xx2(5z+6)`
`=18(z+3)+(z+3)+6(5z+6)`
`=19(z+3)+6(5z+6)`
`=19z+19xx3+6xx5z+6xx6`
`=19z+57+30z+36`
`=19z+30z+57+36`
`9(2z+6)+(z+3)+3(10z+12)=49z+93`

Answer 2

`49z+93`

Explanation:

• Expand out the brackets
  `18z+54 +z+3 +30z+36`
• Put similar subjects together
  `18z + z + 30z + 54 + 3 + 36`
• Add together
  `49z + 93`