Resolva as expressões numéricas a seguir
a) 1/3-1/4x1/5
b) 1/3÷1/6-1/4
c) (1/3+5/2-2)x (1/8+1)
d) 4+5 (3 1/2+1/3)x2/3
Soluções para a tarefa
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a) 1/3-1/4x1/5
1/3-1/20
17/60
b) 1/3÷1/6-1/4
2-1/4
7/4
c) (1/3+5/2-2)x (1/8+1)
5/6 x 9/8
45/48 simplificando por 3 = 15/16
d) 4+5 (3 1/2+1/3)x2/3
9 (3 1/2+1/3)x2/3
9( 7/2 + 1/3) x 2/3
9(23/6) x 2/3
69/2 x 2/3
69/3 simplificando por 3 = 23
1/3-1/20
17/60
b) 1/3÷1/6-1/4
2-1/4
7/4
c) (1/3+5/2-2)x (1/8+1)
5/6 x 9/8
45/48 simplificando por 3 = 15/16
d) 4+5 (3 1/2+1/3)x2/3
9 (3 1/2+1/3)x2/3
9( 7/2 + 1/3) x 2/3
9(23/6) x 2/3
69/2 x 2/3
69/3 simplificando por 3 = 23
laurelidb:
Vou resolver por aqui
4/5+ (3 1/2+1/3)x2/3 =4/5+ ( 7/2+1/3)x2/3 = 4/5+(23/6) x 2/3 = 4/5 + 23/9 = 151/45
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