Evaluate :

`15/4 - 7x = 9`

Solve 15/4-7x=9

Evaluate : 1/2 times 4/9 + 7/9 times 9/4 + ( -6/7 ) times 9/2

Solve (15)/(4)-7x=9

Evaluate: 7\ x\ |-15|-|-9|x\ 8

If 3 ( 5x - 7) - 4 ( 8x - 13) = 2 ( 9x - 11) - 17, then the value of ( 7x - 5)/(11 x - 9) is

Solve the following inequlaities 7x +15 ge 9 - 4x -5 le ""(2-3x)/(4) le 9 5x- 6 le 4 " and " 7- 3x ge 2x

Find the value fo x:y, if (7x - 15y)/(4x + 6y) = (5)/(6).

Evaluate of each of the following integrals 15) : int_(-pi/4)^( pi/4)(x^(11)-3x^(9)+5x^(7)-x^(5)+1)/(cos^(2)x)dx

Evaluate |{:(9,7,13),(4,3,9),(5,4,4):}|