Answer:
b
Step-by-step explanation:
Step-by-step explanation:
512+18=530
423+12=435
5421+14=5435
6324+32=6356
7985+23=8008
Answer:
Step-by-step explanation:
1. x = y-4
0 = y - 4 -x
4 = y - x
2. 2x+4y = 10
x+4y = 5
x+y = 5/4
Answer:
Step-by-step explanation:
Answer:X=9
Step-by-step explanation:
x+18=3x
18=2x
x=9