Question

solve the question
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Answer 1

Answer:

(I) - x-11

Step-by-step explanation:

8x-6x- 16+6

- 2x-22

x-11

Answer 2

(i) 8x - 16 = 6x + 6

8x - 6x = 6+16

2x = 22

x = 22/2

= 11

(ii) 16 ( x + 1 ) - 6 = 14 ( x + 1 )

16x + 16 - 6 = 14x + 14

16x - 14x = 14 + 6 - 16

2x = 4

x = 4/2

= 2

(iii) x/5 - 9/2 = -x/6

x/5 + x/6 = 9/2

( 6 + 5 )x/30 = 9/2

11x/30 = 9/2

x = 9/2 × 30/11

= 270/22

= 135/11

(iv) 6 - a - 1 a - 2 3 - a

————- - ——— = ———

2 3 2

( 6 - a - 1 ) 3 ( a - 2 ) 2 3 - a

—————— - ————— = ———

2 × 3 3 × 2 2

18 - 3a - 3 - 2a - 4 3 - a

—————-———— = ———

6 2

11 - 5a 3 - a

———— = ———

6 2

( 11 - 5a ) 2 = ( 3 - a ) 6

22 - 10a = 18 - 6a

6a - 10a = 18 -22

- 4a = - 4

a = -4/4

= -1

(v) 2 ( 2m + 1 ) - 40% of ( 6m - 1 ) = 7.2

4m + 2 - 40/100 ( 6m - 1 ) = 7.2

4m + 2 - 240m/100 - 40/100 = 7.2

4m - 240m/100 - 40/100 = 7.2 + 2

400m - 240m

———————— - 40/100 = 9.2

100

16m - 40 = 9.2 × 100

16m = 920/40

16m = 23

m = 23/16

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