Question

Please solve the problems please if you are not able to answer please don't answer it​

Answer 1

Answer:

a) 1.89 b ) 5

Step-by-step explanation:

a) 3x/2 - 7/5 = 11/3 - 5x/4

Taking the values to the same side:

3x/2 + 5x/4 = 11/3 + 7/5

Finding LCM of the denominators

((3x × 2 )+ 5x)/4 = (11×5 + 7×3)/15

(6x + 5x)/4 = (55+21)/15

11x /4 = 76/15

11x = 76 ×4/15 = 5.2 ×4 = 20.8

x = 20.8/11 = 208/110 = 1.89

b) (8/9) ^4x +3 × (8/9)^2x-7 = (8/9)^3x+11

Acc to rule :

When bases are same and they are multiplied the powers are added

(4x +3 ) + (2x -7) = ( 3x + 11)

4x + 3 + 2x - 7 = 3x + 11

6x -4 = 3x + 11

6x - 3x = 11 +4

3x = 15

x = 5