Question

calcule as expressões

a) 1/3 × (3/5 + 1/2)

b) 2/2 × (4/3 - 3/4)

c) (5/4 - 1/2) × (1/3 + 2/5)​

por favor alguém me ajuda

Answer 1

a)1/3x(3/5+1/2)=

1/3x(3+2(5/2=MMC)

1/3x(6+5/10)=

1/3x11/10=11/30

B)2/2X(4/3-3/4)=

2/2X(16-9/12)=

2/2X7/12=14/24

c)(5/4-1/2)x(1/3+2/5)=

(10-4/8)x(5+6/15)=

6/8x11/15=66/120