Problem 50
Simplify each expression. $$ 6-3 z-2 z-5+z-3 z $$
Problem 51
Simplify each expression. $$ -10+x+4 x-7-4 x $$
Problem 56
Select the lesser of the two given numbers. $$ -16,-17 $$
Problem 64
Perform each indicated operation. $$ (5-12)(19-4) $$
Problem 65
Simplify each expression. $$ -6-4(y-7) $$
Problem 68
Write a fraction with denominator 24 that is equivalent to \(\frac{5}{8}\)
Problem 73
Insert one pair of parentheses so that the left side of each equation is equal to the right side. $$ 10-7-3=6 $$
Problem 78
Perform each indicated operation. $$ \frac{-27(-2)-|6 \cdot 4|}{-2(3)-2(2)} $$
Problem 80
Simplify each expression. $$ 8.4(6 t-6)+2.4(9-3 t) $$
Problem 83
Evaluate each expression for \(x=6, y=-4,\) and \(a=3\) $$ (2 x+y)(3 a) $$