1. 3(5q+9)+5q
4(5q+6)
use number 3 for q
3(5*3)+9+(5*3)
3*15+9+15
45+24
69
4(5*3)+6
4*15+6
60+6
66
the first expression represents a number greater than the second expression
69>66
2. -4(7-2m)+11m
first we do -4*7 and -7*-2
(-28+8m)+11m
8m+11m is 19m
(-28)+19m
3. -18- 1/2(50z+60)-35z
6(-12-10z+4)
12(-5z-4)
first expression:
-18 - (25z+30)-35z
-18 - -10z+30
-18+10z+30
12+10z
second expression:
6(-8-10z)
-48-60z
third expression:
-60z-48
the first expression is not equivalent to the third expression, but the second expression is
