Question

a+b=58 a este cu 8 mai mare decât b

Answer 1

a+b=58
a=8+b
8+b+b=58
2xb+8=58
2xb=58-8=50
b=50:2
b=25
a=8+25
a=33
proba:33+25=58;
metoda grafica:
a+b=58
a=8+b
b /_______/
a /_______/...+8/  }58
2 parti+8=58
2 parti=58-8=50
1 parte=50:2=25
1 parte=b=25
b=25
a=8+b=8+25=33
a=33

Answer 2

a+b=58
a=b+8
58-8=50
50/2=25
a=25+8
a=33
b=25
33+25=58