Fie: x=0+2×4×6-80÷10÷1; z=7+7÷7+(7+7)÷7. Calculează x-2z+y=

Răspuns :

x=0+2×4×6-80÷10÷1
x = 48-8
x =40

y = 
5+5×5-5÷5
y = 5+25-1
y=29

z= 
7+7÷7+(7+7)÷7
z= 7+1+14:7
z=7+1+2
z=10

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x-2*z+y =

= 40 -2*10+29
=40-20+29 = 49

x=0+2×4×6-80÷10÷1
x = 48-8
x =40

y = 5+5×5-5÷5
y = 5+25-1
y=29

z= 7+7÷7+(7+7)÷7
z= 7+1+14:7
z=7+1+2
z=10

x-2×z+y =

= 40 -2×10+29
=40-20+29 = 49