Question

(99:9+7) ×10+(72+(a-44×2×3)+1000=1355

Answer 1

(99:9+7) ×10+72+(a- 44× 2×3)
+1000 =1355
(11+7)×10+72+(a-88×3)+1000=1355
18×10+72+(a-264)+1000=1355
180+72+(a-264)=1355-1000
180+72+(a-264)=355
72+(a-264)=355-180
72+(a-264)=175
a-264=175-72
a-265=103
a=265+103
a=368

Tu, inaintea lui 72 ai pus o paranteza. Nu stiu daca ai pus-o corect, deoarece nu se inchide. Dar daca nu era faceai 180+72 direct. Sa imi spui exact cum e. ;)

Si exercitiul din poza:
[(1+2×3):x+5]:6=1
(1+6):x+5=6×1
7:x+5=6
7:x=6-5
7:x=1
x=7:1
x=7

Succes! Si sper ca te-am ajutat! :)

Answer 2

(11+7)x10+(72+a-88x3)+1000=1355
18x10+(72+a-352)+1000=1355
180+(72+a-352)=1355-1000=355
72+a-352=355+352=707
72+a=707
a=707-72
a=635