Question

Solve 5(2x + 4) = 15. Round to the nearest thousandth.
PS: x+4 is the power for 2

Answer 1

`\qquad \qquad\huge \underline{\boxed{\sf Answer}}`

Let's solve for x ~

`\qquad \sf  \dashrightarrow \: 5(2x + 4) = 15`

`\qquad \sf  \dashrightarrow \: (5 * 2x) + (5 * 4) = 15`

`\qquad \sf  \dashrightarrow \: 10x + 20 = 15`

`\qquad \sf  \dashrightarrow \: 10x + 20 - 20 = 15 - 20`

`\qquad \sf  \dashrightarrow \: 10x = - 5`

`\qquad \sf  \dashrightarrow \: (10x)/(10) = ( - 5)/(10)`

`\qquad \sf  \dashrightarrow \: x = - ( 1)/(2)`

hence value of x is - 1/2