Răspuns:
Explicație pas cu pas:
1)
54:i=7+7-5
54:i=9
i=54:9
i=6
-
(96-12-40)+f-63=13
44+f-63=13
44+f=13+63
44+f=76
f=76-44
f=32
(642-460)+42:i=180+8
182+42:I=188
42:i=188-182
42:i=6
i= 42:6
i=7
93-(85-81+40)- h =30+1
93-44-h=31
49-h=31
h=49-31
h=18
(30+36-r)+30-50=3
(66-r)+30-50=3
(66-r)+30=3+50
(66-r)+30=53
(66-r)=53-30
(66-r) =23
66-r=23
r=66-23
r=43
