Solve:-
`8a+5b=9`
`3a+2b=4`.

Solve : 3a+5b=-9 , 2a+5b=-11 .

Solve: a + 2b =4, 2a +b =9 .

Solve: 5<=(2-3x)/(4)<=9

If (10a^3 + 4b^3) : (11a^3 - 15b^3 =7:5, then (3a + 5b) : (9a - 2b)=? यदि (10a^3 + 4b^3) : (11a^3 - 15b^3 =7:5 है, तो (3a + 5b) : (9a - 2b)=?

Divide: 3/8b y5/9 (ii) 3 1/4b y2/3

Factorise: 9a (3a-5b) - 12 a ^(2) (3a - 5b )

Solve for a and b:2(a+b)-(a-b)=6,4(a-b)=2(a+b)-9

Solve 9x+5=4(x-2)+8

Add the following expressions: (i) 8a-6a b+5b ,\ -6a-a b-8b\ a n d-4a+2a b+3b (ii) 5x^3+7+6x-5x^2,\ 2x^2-8-9x ,\ 4x-2x^2+3x^3,\ 3x^3-9x-x^2\ a n d\ x-x^2-x^3-4