Question

1)gaseste valoare lui x: (120x12+250x45):5-x=2507
2)verifica inegalitatea (9x8-7-6)+[5x4:(3-2)+1]<123-(4+5x6):(7+8:8+9)=

Answer 1

1) (120*12+250*45):5-x=2507
(1440+11250):5-x=2507
12690:5-x=2507
2538-x=2507
x=2538-2507
x=31

2) (9x8-7-6)+[5x4:(3-2)+1]<123-(4+5x6):(7+8:8+9)=
   = (72-7-6)+(20:1+1)<123-(4+30):(7+1+9)
   =59+21<123-34:17
   =80<123-2
   =80<121



sper că te-am ajutat :D