Question

Practice set 24.5 (1) Find the value. i) 15 - 21 (ii) 4 - 91 (iii) 171x1-4 (2) Solve. (i) 3x-51=1 (ii) 17-2x = 5 (ii) | (ii) 1871 -x 2​

Answer 1

Step-by-step explanation:

(1)

(i) 15 - 21 = -6

(ii)4 - 91 = -87

(iii) 171 × 1 - 4 => 171 × -4

=>-684

(2)

(i) 3x -51 = 1 => 3x = 1 + 51

=> 3x = 52

_

=>x = 52/3 (or) 17.3

(ii) 17 - 2x = 5 => -2x = 5 -17

=> -2x = -12

=> x = 12/2

=> x = 6