Question

Simplifique ao máximo as expressões.


ME AJUDEM POR FAVOR PRA AGORA

Answer 1

Resposta:

a) 41/9

b) 157/18

c) 9/10

d) 51/77

e) 45/56

f) 46/51

Explicação:

a) 2/9+13/3 =

[(9÷9×2)+(9÷3×13)]/9 =

[(1×2)+(3×13)]/9

[2+39]/9 =

41/9

b) 2/9+17/2 =

[(18÷9×2)+(18÷2×17)]/18 =

[(2×2)+(9×17)]/18 =

[4+153]/18 =

157/18

c) 7/5-4/8 =

[(40÷5×7)-(40÷8×4)]/40 =

[(8×7)-(5×4)]/40 =

[56-20]/40 =

36/40 = 36÷2/40÷2 = 18/20 = 18÷2/20÷2 = 9/10

d) 17/11×6/14 =

(17×6)/(11×14) =

102/154 = 102÷2/154÷2 = 51/77

e) 15/16÷7/6 =

15/16×6/7 =

(15×6)/(16×7) =

90/112 = 90÷2/112÷2 = 45/56

f) 4/17+(21/7×2/9) =

4/17+(21×2/7×9) =

4/17+42/63 =

[(1071÷17×4)+(1071÷63×42)]/1071 =

[(63×4)+(17×42)]/1071 =

[252+714]/1071 =

966/1071 = 966÷3/1071÷3 = 322/357 = 322÷7/357÷7 = 46/51