Explain how to add fractions with unlike denominators

For the equations below which statement is true ? -2x=14 6x=-42

Acompany produces packets of soap powder labeled “giant size 32 ounces.” the actual weight of soap powder in such a box has a normal distribution with a mean of 33 oz and a standard deviation of 0.7 oz. to avoid having dissatisfied customers, the company says a box of soap is considered underweight if it weighs less than 32 oz. to avoid losing money, it labels the top 5% (the heaviest 5%) overweight. how heavy does a box have to be for it to be labeled overweight?

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq