Răspuns :
a + b = 46
a - b = 16
adunam relatiile
a + b + a - b = 46 + 16
2a = 62
a = 31
b = 15
a+b=46
a-b=16=>a=b+16
b+16+b=46
=>2b=46-16
2b=30
=>b=30÷2
b=15
=>a=15+16
a=31
verificare
__________
31+15=46(convine)
31-15=16(convine)
a + b = 46
a - b = 16
adunam relatiile
a + b + a - b = 46 + 16
2a = 62
a = 31
b = 15
a+b=46
a-b=16=>a=b+16
b+16+b=46
=>2b=46-16
2b=30
=>b=30÷2
b=15
=>a=15+16
a=31
verificare
__________
31+15=46(convine)
31-15=16(convine)