Question

six more than five times a number (x) is at least twenty one

Answer 1

This is an expression of a inecuation, so we have to express all the terms in a mathematic form:

We express, six more than five times a number (x) like: 6 + 5x

At least twenty one means: ≥ 21

So from all the terms together we have: 6 + 5x ≥ 21

The pass the number 6 to the left side: 5x ≥ 21 - 6

So we have: 5x ≥ 15

Finally we divide the left side by 5: x ≥ 3

Solution: All numbers greater than or equal to 3