Question

Give solution for sum 2/5+3/15+7/10

Answer 1

• Step-by-step explanation:So then first find the LCM of 5,15 and 10 which is 30Then do(2×6/5×6)+(3×2/15×2)+(7×3/10×3)we multyply the denominators only and then the number by which we multiply ,we will take that number and multiply the numerator shown about for example 5×6=30 so If we multiply 5 by 6 then only we will get 30 right ..so we will take the six and multiply with 2 with is the numerator .I'd you still did not understand I will give an another example ...15×2 =30 ,so because of the 2 we get 30 therefore we will multiply the nber which helped 15 to get 30 which is 2 ..so 2 is the number which helped 15 to get 30 as 15 got multiplied by 2 to get 30 . ok so next step ..12/30+6/30+21/30
• 12+ 6+21 39
• _______= _____
• 30 30

So we do not add 30 +30+30 which are the denominators because it's a rule and plus they are alredy same in number which we wanted them to be same in number because that's why we found the LCM so there is no need of adding 30 + 30 + 30So now 39/30 is the correct Answet but it's an improper fraction that means 39 is bigger then 30 so we will either find it in decimal form or make it into mixed fraction as never leave an improper fraction just like that or marks are cut .So final Answer is 1.3(Ans )Or

• 9
• 1 ____(Mixed Fraction Answer)
• 30