Find 'a' so that the expression becomes `(a+10)+7=4+(10+7)`.

Express y in terms of x in the expression 3x – 7y = 10

factorize the given expression 10x^2-9x-7

Find the decimal expansions of 10/3,7/4

Find the remainder in expression– (1! + 2! + 3! + …..10!)/(7)

Two numbers are such that the ratio between them is 5:8. If each is increased by 10, the ratio between the numbers become 7:10. Find the numbers.

Find the decimal expansions of (10)/(3),(7)/(8) and quad (1)/(7)

Find the sum of the series : (1)/(1.4)+(1)/(4.7)+(1)/(7.10)+.... to n terms.

Find the sum of 20 terms of the AP 1;4;7;10...

Express the fraction 7.566/0.00600 in the form of mxx 10^(3) . Also find the expression correct to three significant figures.