Question

Vă rog să mă ajutati la exericitiul 24. Dau coroanita !!!!!

Answer 1

[(X-540:6)*7-100:10]-100=30
[(X-90)*7-10]=30+100
(X-90)*7-10=130
(X-90)*7=130+10
(X-90)*7=140
X-90=140:7
X-90=20
X=20+90
X=110

Answer 2

[(x-90)×7-10]-100=30

[(x-90)×7-10]=100+30

(x-90)×7=130+10

(x-90)×7=140

x-90=140:7

×-90=20

x=20+90

x=110