Question

a) Afla numărul necunoscut din fiecare expresie, după exemplul oferit.

20×e-(1950+550):100=6175

35×f+(800-752:4):2=551

g:25+(100-1632:51)×2=286

va rog ajutatima
va dau coroană​

Answer 1

20×e-(1950+550):100=6175

20×e-2.500:100=6175

20×e-25=6175

20×e=6175+25

20×e=6.200

e=6.200:20

e=310

35×f+(800-752:4):2=551

35×f+(800-188):2=551

35×f+612:2=551

35×f+306=551

35×f=551-306

35×f=245

f=245:35

f=7

g:25+(100-1632:51)×2=286

g:25+(100-32)×2=286

g:25+68×2=286

g:25+136=286

g:25=286-136

g:25=150

g=150×25

g=3.750