Question

1-Elimine os parênteses e calcule:

a)(+3/5)+(-7/5)

b)(-3/2)+(+5/7)

c)(-9/5)+(-5/3)

d)(+4/3)-(+7/4)

e)(+11/3)-(-5/6)

f)(-7/6)-(+11/9)

g(-7/3)-(-5/2)

h)2/5+(1/7-1/3)

me ajudem pff,coloquem a soma pffffff
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Answer 1

Resposta:

a) (+3/5)+(-7/5)

= +3/5 -7/5

= +4/5

b) (-3/2)+(+5/7)

= -3/2 +5/7 mmc=14

= -21/14 +10/14

= -11/14

c) (-9/5)+(-5/3)

= -9/5 -5/3 mmc=15

= -27/15 -25/15

= -52/15

d) (+4/3)-(+7/4)

= +4/3 -7/4 mmc=12

= +16/12 -21/12

= -5/12

e) (+11/3)-(-5/6)

= +11/3 +5/6 mmc=6

= +22/6 +5/6

= +27/6

f) (-7/6)-(+11/9)

= -7/6 -11/9 mmc=18

= -21/18 -22/18

= -43/18

g) (-7/3)-(-5/2)

= -7/3 +5/2 mmc=6

= -14/6 +15/6

= +1/6

h) 2/5+(1/7-1/3) mmc=21

= 2/5+(3/21-7/21)

= 2/5+(-4/21)

= 2/5 -4/21. mmc=105

= 42/105 -20/105

= +22/105

Explicação passo-a-passo:

Espero ter ajudado amg