54 out of the 72 teachers in a school staff meeting were first-year teachers. What percentage of the teachers in the meeting were first-year teachers?

What should be done to solve the equation? x+14=21 add 14 to both sides of the equation. subtract 14 from the left side of the equation. add 14 to the left side and subtract 14 from the right side of the equation. subtract 14 from both sides of the equation.

Ill mark the brainliest if you me with the these three questions 7,8,9

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2