Question

translate the sentence into an equation five time the sum of a number and 8 is equal to 4 use the variable b for the unknown number

Answer 1

Let us take the unknown number as b.

Sum of the number and 8 can be represented as,

8 + b

Therefore, five time the sum is,

5(8+b)

This is equal to 4, so,

5 (8 +b) = 4

This is the required equation.

The number is,

`\begin{gathered} 5(8+b)=4 \\ 40+5b=4 \\ 5b=4-40 \\ 5b=-36 \\ b=-7.2 \end{gathered}`

The number is, -7.2.