[Deepak Kumar]

Here is the solution,

=>3x + 12 -4x + 2 = 7

=> -x + 14= 7

=> -x = 7 -14

=> -x = -7

Therefore X= 7 by cutting – from both side

• This reply was modified 1 year, 10 months ago by  Deepak Kumar.

[Deepak Kumar]

Average means adding total number of observations divided by no of observations. here, by adding all the sum of money which is earn by A,B and C which is equal to 2070 and number of observations is 3. by dividing 2070 with 3, 690 is the answer. so the average money earned by them in a ay is 690.

= 800+550+620/3

=2070/3

=690 answer

[Deepak Kumar]

In this question after taking the lcm of denominator of 6 and 8 which is 24 and after dividing 24 with 6 and 8 we got the result 4 and 3 and after then multiplying 4 with 1 which is the numerator of 6 and multiplying 3 with 7 which is the numerator of 8, which is 4 and 2, add them = 25/24 is the answer

=1/6 + 1/8

= 4+21/24

=25/24

answer

[Deepak Kumar]

here is the pictorial solution

[Deepak Kumar]

Here by drawing 2 triangles ABC and XYZ and looking into the triangle ABC, i conclude that Triangle ABC is a right Angled Triangle because after using Pythagoras Theorum Square of AB + BC is equal to the Square of AC. So Triangle ABC and XYZ are similar Triangle,. Therefore AC= 15cm, By using Pythagoras Theorum.