află necunoscuteleex 9 si ex 10.
multumesc

Cam zgarcit la puncte:))

9).

1292+a+1371=4860

a+2663=4860

a=4860-2663

a=2197

b+(6032-3144)=7468

b+2888=7468

b=7468-2888=4580

10).

a).

2478+m-959=2607

1519+m=2607

m=2607-1519=1088

b).

3943-1352+n=5000

2591+n=5000

n=5000-2591=2409

c).

4241+c-519=4440

3722+c=4440

c=4440-3722=718

d).

6838-2496+d=7413

4342+d=7413

d=7413-4342=3071

Ex 10: a.) 2.478+m-959=2.606| -2.478
m-959=128 |+959
m=1.087

b.) 3.943-1.352+n=5.000 |+3.943
1352-n=8943 |-1.352
n=7591

c.) 4.241+c-159=4.440 |-4241
c-159=199 |+159
c=358

d.) 6838-2496+d=7413 |+6838
2496+d=14.251 | -2496
d= 11.755

Ex 9: a.) 1.292+a+1.371=4.860 | -1.292
a+1 371 =3 568 |-1 372
a=2 1976

b.) b+(6 032-3 144)=7 468
b+2 888=7 468 |-2888
b=4 580