Question

Please help me with this maths question thanks!

Answer 1

x = 2

Explanation:

x + 3 + 1/2 x + 3 +x + 1 = 12 Combine like terms

21/2 x + 7 = 12 Subtract 7 from both sides of the equation

2 1/2 x = 5

Another name for 2 1/2 is
`(5)/(2)` (
`(2)/(2)` +
`(2)/(2)` +
`(1)/(2)`)

`(5)/(2)` x = 5 Multiply both sides of the equation by
`(2)/(5)`

`((2)/(5))`
`((5)/(2))`x =
`(2)/(5)`
`((5)/(1))`

x = 2