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Calculați nr d 7a-5b+2c va rog

Calculați Nr D 7a5b2c Va Rog class=

Răspuns :

Răspuns:

a=1/7 + 1/7 : 1/2

a=1/7 + 1/7 • 2

a=3/7

b=(3/4 + 1/2) : 625/100

b=5/4 • 4/25

b=1/5

c=1/2 • 3/4 + 1/4 • 1/2

c=3/8 + 1/8

c=4/8

c=1/2

D fiind care ???

a=1/7+1/7:0,5

a=1/7+1/7x10/5

a=1/7+2/7

a=3/7

b=(0,75+0,5):6,25

b=1,25:6,25

b=0,2

c=1/2: 1 1/3+(1/2)²x1/2

c=1/2:4/3+1/4x1/2

c=1/2x3/4+1/8

c=3/8+1/8

c=4/8

c=1/2

d=7a-5b+2c

d=7x3/7-5x0,2+2x1/2

d=3-1+1

d=2+1

d=3

Succes!