Question

4.
Five less than 3 times a number is - 20. Find
the number
15​

Answer 1

Answer:

let the number be x and given that 3times the number 5 less than -20

$3 x - 5 = - 20 \\ 3x = - 20 - 5 \\ 3x = - 15 \\ x = \frac{ - 15}{3} \\ x = - 5$

hope this helps u~~~~ -,-

Answer 2

Answer:

Let's take the number as x

so,

3x - 5= -20

3x = -20 + 5

3x = -15

x = -15/3

x = -5

Step-by-step explanation:

1. At first we form the equation which is three times a number minus 5 which gives answer -20.

2. Then we transfer -5 from LHS to RHS (when doing this the sign of the number changes, here( -) to (+).

3. The answer comes is 3x = -15. Now we transfer 3 from LHS to RHS again the sign changes from multiplication to division.

4. After dividing we get the answer as -5. Thus, x, which is the number is actually -5