Question

the value of x in the equation below represents the number of siblings i have, solve the equation and tell me how many siblings do i have?3(×+4)=3×+10-2×+23-×

Answer 1

to solve for x, we'll first of all open the bracket and the collect like terms

`3(x\text{ + 4) = 3x + 10 - 2x + 23 - x}`
`\begin{gathered} 3x\text{ + 12 = 3x + 10 - 2x + 23 - x} \\ 3x\text{ - 3x + 2x + x = 10 - 12 + 23} \\ 3x\text{ = 21} \\ \end{gathered}`

divide both sides by 3

`\begin{gathered} 3x\text{ = 21} \\ (3x)/(3)\text{ = }(21)/(3) \\ x\text{ = 7} \end{gathered}`

x = 7