If `( 4x )/3 - 7 = 5` , then find the value of x

find the value of x 3+x/4=5

Find the value of x. 3x-5=7-x

If the mean of x + 2, 2x + 3, 3x + 4 and 4x + 5 is x + 2, then find the value of x.

(i) x+2y=-7 and 3x-2y=-1, then find the value of x. (ii) If x+y=8 and 4y-x=2, then find the value of y. (iii) If 3x+5y=9 and 5x+3y=7, then find the value of x+y. (iv) If 3x-y=11 and x-3y=17, then find the value of x-y.

IF 3x +5Y = 9 and 5x + 3y =7 then find the value of x+y

If 3x+5y =9 and 5x+3y=7, then find the value of x+y.

If x = 7.5^(@) then find the value of (cos x - cos 3x)/(sin 3x - sin x)

If the value of determinanats |(x,-5),(3,4)| is 31, then find the value of x.

If x=-3 find the value of 4x^2-5x+3