Answer:
23
Step-by-step explanation:
Step 1:
3 - -5 (4)
Step 2:
3 - (-20)
Step 3:
3 + 20
Answer:
23
Hope This Helps :)
15
63 x 5 = 315
315/20 = 15.75
hence, 15 $20 bills
3x+12=39
Minors 12 on both side
3x=27
Divide 3 on both side
X=9
<span>-6x - 2 = 40
-6x = 42
x = -7
..................</span>