Question

add the following rational numbers a) -3/7 and -3/5 b) -5/3 and 13/12 c) 12/15and-17/25 d) 12/36 and -17/28 e) -7/10and-8/15 f) -20/9 and 19/21 g) -100/121 and -29/99 h) -11/24 and 17/36 I) 12/18 and 14/36 j) 17/20 and -4/30​

Answer 1

Step by step explanation:

a)-3/7+(-3/5)

LCM of 7 and 5=35

Therefore,-3*5/7*5 + -3*7/5*7

-15/35 + -21/35

(-15) + (-21 ) /35

36/35

Ans. 36/35

b)-5/3 + 13/12

LCM of 3 and 12=12

Therefore,-5*4/3*4 + 13/12

-20/12 + 13/12

-20+13/12

-7/12

Ans. -7/12