Question

Aflati nr necunosc , din fiecare egalitate , folosind proba operatiei intalnite :
a)a+5608=11011
b)2875-a=928
c)a-634=63×34
d)b×57=1083
e)14×(b+7)=532
f) (b-45)×39=1482
g)c:43=34
h) (c-89):3=37
i)2022:(c+37)-6 ​

Answer 1

b. 2875-a=928

a=2875-928

a =1947

verficare 2875-1947=928

Answer 2

a) a+5608=11011
a=11011-5608=5403
b) 2875-a=928
a=2875-928=1947
c) a-634=63x34
a-634=2142
a=2142+634=2776
d) bx57=1083
b=1083/57=19
e) 14b+98=532
14b=434(532-98)
b=434/14=31
f) 39b-1755=1482
39b=1482+1755
39b=3237
b=3237/39=83
g) c=34x43=1462
h) c-89=3x37
c-89=111 c=111+89=200
i) 2022=6x(c+37)
2022=6c+222
2022-222=6c
1800=6c
c=1800/6=300