Question

If x - 10 = -15, then find the value of 5x - 30 *

Answer 1

x = -55

Explanation:

We know that x - 10 = -15 and we want to find the value of 5x - 30 but our first step would be to find the value x so then we can can substitute that back into the expression so

x - 10 = -15

⇔ Add -10 to both sides to isolate x

x = -5

So now we know that value of 'x' is -5 we can substitute it back into the expression 5x - 30 so

5x - 30

→ Substitute x = -5 back into it

5 × -5 - 30

→ Simplify

-25 - 30 = -55

If x - 10 = -15, then find the value of 5x - 30 the value of x is -55

Answer 2

The value is -55

In the equation x-10=-15, x is equal to -5.

Therefore, the value of x is plugged into the second equation and the value found is -55.