Question

Ajutatima cu acest exercitiu !

Answer 1

|----|
|----|+12 }52
1. egalam partile
52-12=40 2p=40
2.nr a
40:2=20
3.nr b
20+12=32
R:a=20
b=32
V:20+32=52
32-20=12

Answer 2

a+b=52
a-b=12
------------
a=?b=?

52=2b+12
2b=52-12
2b=40
b=40:2
b=20
a=20+12
a=32

32+20=52
32-20=12

---------------------------------------------------

a*b=16...=>..a=16:b   si  b=16:a
b:a=3...=> b=3*a..=> b=16-a
------------------------------------------
a=?b=?

a+3a=16
4a=16
a=16:4
a=4
b=3a
b=3*4
3a=12....=>..b:a=3....=>12:4=3
1b=12:3
1b=4    =>a*b=16...=>.4*=16

R=> in relatia a*b=16 => a=4 si b=4  =>4*4=16
        in relatia b:a=3..=>b=12(3a) si a=4...=>12:4=3

--------------------------------------------------------------------------

b:a=4   => b= 4*a
b-a=30 =>b=30+a
------------------------
a=?b=?

a=30:3
a=10
b=10*4
b=40

40:10=4
40-10=30