Question

RATIONAL NUMBERS

Use the properties to find the solution:
i) -4/3 x 5/7 + 3/5 x 4/3 + 1/5
ii) 1/2 x (-1/5) + 3/2 x (-1/2) + 2/5 x (-1/5)

Answer 1

Answer:

i) 1/21

ii) -93/100

Step-by-step explanation:

i) -4/3 x 5/7 + 3/5 x 4/3 + 1/5

-20/21+4/5+1/5

20(-20/21)+21(20/20)

(-400+420)/420 = 20/420 = 1/21

ii) 1/2 x (-1/5) + 3/2 x (-1/2) + 2/5 x (-1/5)

10(-1/10)-25(3/4)-4(2/25)

(-10-75-8)/100 = -93/100