Please help me I need help ASAP

With #! i’ve tried to figure it out but i can’t.

Examine the two-step equation. − 7 4 + x 4 = 2 which property of operations allows you to add the same constant term to both sides? amultiplication property of equality bdivision property of equality caddition property of equality dsubtraction property of equality

Solve the triangle. a = 21°, c = 105°, c = 5