Question

Efectuati: a) 15+3×(4×3-45÷9)-16= b)154+2×(6:2+36:9)= c)[1+2×(6+6:3)-5]:6= d)100:2+[(50×2:10+90)+10-5×4]=

Answer 1

a. 15+3×(4×3-45÷9)-16=
=15+3x(12-5)-16
=15+3x7-16
=15+21-16
=36-16
=20
b. 154+2x(6:2+ 36:9)=
=154+2x(3+4)
=154+2x7
=154+14
=168
c.[1+2x(6+6:3)-5]:6=
=[1+2x(6+2)-5]:6
=(1+2x8-5):6
=(1+16-5):6
=(17-5):6
=12:6
=2
d)100:2+[(50×2:10+90)+10-5×4]=
=50+[(100:10+90)+10-20]
=50+[(10+90)+10-20]
=50+(100+10-20)
=50+(110-20)
=50+90
=140
Aici ai rezolvarile complete :)!Spor la treaba:))

Answer 2

a. 15+3×(4×3-45÷9)-16=
=15+3x(12-5)-16
=15+3x7-16
=15+21-16
=36-16
=20

b. 154+2x(6:2+ 36:9)=
=154+2x(3+4)
=154+2x7
=154+14
=168

c.[1+2x(6+6:3)-5]:6=
=[1+2x(6+2)-5]:6
=(1+2x8-5):6
=(1+16-5):6
=(17-5):6
=12:6
=2

d)100:2+[(50×2:10+90)+10-5×4]=
=50+[(100:10+90)+10-20]
=50+[(10+90)+10-20]
=50+(100+10-20)
=50+(110-20)
=50+90
=140
sper ca te-am ajutat