Question

Ex:6,7,8 prin metodă grafică va rog

Answer 1

6) a=7500-b
7500-b-b=3500
7500-2b=3500
-2b=3500-7500
b=-4000/-2=2000
a+2000=7500
a=7500-2000=5500
7) a+b+c=168
a=48
b-c=10
48+b+c=168
b-c=10
b=10+c
48+10+c+c=168
58+2c=168
c=168-58 totul supra 2 =110/2=55
b=10+55=65
8) m+p=1200
p=4m
m+4m=1200
5m=1200
m=1200/5=240
p=4 ori 240=960