Resolva as operações abaixo
A) (7/2-4/3+3/2) • 3/5
B) 7/3•8/2 : 1/4
C) (7/8÷2/3) • (-3/4)
D) 9/4+3/5+2/6
E) 3/4÷7/8
F) 1/5+3/5-2/5
G) 7/8+2/4-3/2
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A) (7/2-4/3+3/2) • 3/5
B) 7/3•8/2 : 1/4
C) (7/8÷2/3) • (-3/4)
D) 9/4+3/5+2/6
E) 3/4÷7/8
F) 1/5+3/5-2/5
G) 7/8+2/4-3/2
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Resposta:
Explicação passo a passo:
A) (7/2-4/3+3/2) • 3/5 = (35/10 - 40/30 + 45/30) • 3/5 = (105 - 40 + 45)/100 = 11/20
B) 7/3•8/2 : 1/4 = (56/6) • 4 = 224/6 = 112/3
C) (7/8÷2/3) • (-3/4) = (7/8 • 3/2) • (-3/4) = -21/64
D) 9/4+3/5+2/6 = (135 + 96 + 40)/60 = 271/60
E) 3/4÷7/8 = (3/4 • 8/7) = 6/7
F) 1/5+3/5-2/5 = (1 + 3 - 2)/5 = 2/5
G) 7/8+2/4-3/2 = (7 + 4 -12)/8 = -1