Afla numerele necunoscute:
X÷15=17rest7
169÷a=24rest1
A÷7=143rest1
286÷b=15rest1
Voi cum ati facut?


Răspuns :

x:15=17r7
x=17x15+7
x=255+7
x=262

169:a=24r1
a=(169-1):24
a=168:24
a=7

a:7=143r1
a=143x7+1
a=1002

286:b=15r1
b=(286-1):15
b=285:15
b=19
x :15=17 rest 7
x=17x15+7
x=225+7
x=232

169:a=24 rest 1
a=(169-1):24
a=168:24
a=7

A:7=143 rest 1
A=7x143+1
A=1001+1
A=1002

286:b=15 rest 1
b=(286 - 1):15
b=285:15
b=19