Question

Solve each equation:-9×+20=-7 , 7×-6=-20 , 2×-6=-20​

Answer 1

Answer:

9x +20=-7

9x= - 27

x= - 3.

7x - 6= - 20

7x= - 14.

x= - 2

2x-6= - 20

2x= - 14

x= - 7

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Answer 2

Given :- Solve each equation:-

• 9x + 20 = -7
• 7x - 6 = -20
• 2x - 6 = -20

Solution :-

1) 9x + 20 = (-7)

→ 9x + 20 = (-7)

taking 20 on RHS side and changing the sign,

→ 9x = (-7) + (-20)

→ 9x = (-27)

dividing both sides by 9,

→ x = (-3) (Ans.)

2) 7x - 6 = (-20)

→ 7x - 6 = (-20)

taking 6 on RHS side and changing the sign,

→ 7x = (-20) + 6

→ 7x = (-14)

dividing both sides by 7,

→ x = (-2) (Ans.)

3) 2x - 6 = (-20)

→ 2x - 6 = (-20)

taking 6 on RHS side and changing the sign,

→ 2x = (-20) + 6

→ 2x = (-14)

dividing both sides by 2,

→ x = (-7) (Ans.)

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