Question

calculeaza axb-c,stiind ca a=50+9:9-45, b=3x(300-55x5)x2+3-(14:7-5x0), c=35x2+45x3

Answer 1

a=50+9:9-45
a=50+1-45                   punctul . inseamna ori x
a=51-45
a=6

b=3.(300-55.5).2+3-(14:7-5.0)
b=3.(300-275).2+3-(2-0)
b=3.25.2+3-2
b=150+1
b=151

c=35.2+45.3
c=70+135
c=205

a.b-c=6.151-205
        =906-205
        =701