What is the solution for this system of equations

Find the value of x for which abcd must be a parallelogram -9-6x x-30

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

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