Question

Find the value of x
(i). 2x – 13 = 5
(ii) 7x+10= (-60)-2x
(Answer in explanation)

Answer 1

Step-by-step explanation:

(1)

2x=5+13

x=18/2

x=9

(2)

7x+10=-60-2x

7x+2x=-60-10

9x=-70

x=-70/9

Answer 2

Step-by-step explanation:

(i) 2x-13 = 5

2x = 5 + 13

2x= 18

x = 18/2

x= 9

(ii) 7x+10= (-60)( - 2x )

since -60 is multiplied by -2x

7x + 10 = 120x

10 = 120x - 7x

10= 113x

10/ 113 = x

if from -60 -2x is subtracted,

7x+10 = (-60) - 2x

7x+2x = -60 -10

9x = -70

x = -70/9