Find the sum. −12(7z+4)+15(5z−15)
-5/2 z -5

How can you solve an equation with a variable on both sides? complete the explanation. you can solve the equation by using *(blank)* operations to get the variable terms on one side of the equal sign and the constant terms on the *(blank)* side. then *(blank)* both sides by the coefficient of the resulting variable term.

Aramp rises 4 feet over a distance of 10 feet. what is the length of the ramp?

Felix wrote several equations and determined that only one of the equations has no solution. which of these equations has no solution?