Question

resolver las siguientes fracciones:
1: -1/2+{[3/7-(1/4-5/2)] - ( 3/2-5/4×1/7)}
2: {[5/3-(-2/5)]-4/3÷1/2}×(3/5+7/2)
porfa es para mañana!!!!

Answer 1

1)

= -1/2 + { [ 3/7 - (1/4 - 5/2) ] - ( 3/2 - 5/4×1/7 ) }
= -1/2 + { [ 3/7 + 9/4 ] - 37/28 }
= -1/2 + { 75/28 - 37/28 }
= -1/2 + 19/14
= 6/7

2)

= { [ 5/3 - (-2/5) ] - 4/3 ÷ 1/2 } × (3/5 + 7/2)
= { [ 5/3 + 2/5 ] - 8/3 } × 41/10
= { 31/15 - 8/3 } × 41/10
= -3/5 × 41/10
= -123/50
DALE COMO MEJOR RESPUESTA =D