Pls say hard very hard​

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.

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

Ntriangle abc, m∠a = 35° and m∠b = 40°, and a=9. which equation should you solve to find b?