Question

Simplify.
(i) -3/10 + 12 / -10 + 14/ 10
(ii) -5/10+ 6/13+8
(iii) -5/10+9/7+3/20+-11/14
(iv) 5/36+-7/8+6/-72+ -3/-12​

Answer 1

Step-by-step explanation:

1)-3/10+12/-10+14/10

=-0.3+(-1.2)+1.4

=-0.3-1.2+1.4

=-0.3+0.2

=-0.1

2)-5/10+6/13+8

=-0.5+0.4+8

=-0.1+8

=7.9

3)-5/10+9/7+3/20+(-11/14)

=-0.5+2.25+0.15-0.78

=1.12

4)5/36-7/8-6/72+3/12

=0.13-0.87-0.08+0.25

=-0.57

hope you all understand the answer dear....

Answer 2

Answer:

i) we know that denominator has never negative sign so it will -12/10

sum: -3+(-12)+14 / 10 = -3-12+14 /10 = -15+14/10 = -1/10

ii) -5/10 + 6 /13 + 8/1

lcm of 10 and 13 = 130

-5*13/10*13 = -65/130

6*10/13*10 = 60/130

8*130/1*130 = 1040/130

-65+60+1080/130 = 1075/130 = 215/26

iii) lcm of 10, 7, 20, 14 = 140

-5*14/10*14 = 70/140

9*20/7*20 = 180/140

3*7/20*7= 21/140

-11*10/14*10 = 110/140

70+180+21+110/140 = 381/140

iv) we know 6/-72 = -6/72 and -3/-12 = 3/12

so,

lcm of 36 , 8, 72, 12 = 144

5*4/36*4 = 20/144

-7*16/8*16 = -112/144

-6*2/72*2 = -12/144

3*12/12*12 = 36/144

20+(-112)+(-12)+3 = 20-112-12+3/144 = -101/144

hope it will help you