Answered

Evaluate each expression given that x=-21; y=-48; and z=72.
1.) -z
2.) -(-y)
3.) x-y
4.) -[y+(-x)]
5.) x(y-z)

Sagot :

Mlcparra16id
1) -z = -72
2) -(-y) = y = -48
3) x - y = -21 - (-48) = -21 + 48 = 27
4) -[y+(-x)] = x - y = 27
4) x(y-z) = -21 (-48-72) = -21(-120) = 21*120 = 2520