7x+5y=40 2x+4y=-4

Solve the system of equations

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?

In a fruit survey, 300 children choose their favorite fruit out of apples, bananas, and watermelon. 150 chose apples and 90 chose bananas. what percent chose watermelon?