Răspuns:
a) 397+42×m=859
42×m= 859-397
42×m=462
m=462÷42
m= 11
b)974-124÷n=943
124÷n= 974-943
124÷n=31
n=124÷31
n=4
c)40×p-500=300
40×p=500+300
40×p=800
p=800÷4
p=20
coroană???
