Math, asked by yatharthpant16171031, 4 months ago

rs aggarwal ex 8 question 4

Answers

Answered by Anonymous

1

Answer:

HEY BUDDY HOPE IT HELPS YOU

Step-by-step explanation:

RS AGGARWAL

QUESTION 1:

Solution:

8x + 3 = 27 + 2x

=> 8x – 2x

=> 27 – 3

=> 6x = 24

=> x = 24 / 6 = 4

=> x = 4

QUESTION 2:

Solution:

5x + 7 = 2x – 8

=> 5x – 2x = – 8 – 7

=> 3x = – 15

=> x = −15 / 3 = – 5

=> x = – 5

QUESTION 3:

Solution:

2z – 1 = 14 – z

=> 2z + z = 14 + 1

=> 3z = 15

=> z = 15 / 3 = 5

=> z = 5

QUESTION 4:

Solution:

9x + 5 = 4(x – 2) +8

=> 9x + 5 = 4x – 8 + 8

=> 9x – 4x = – 8 + 8 – 5

=> 5x = – 5

=> x = −5 / 5 = – 1

=> x = – 1

QUESTION 5:

Solution:

7y / 5 = y – 4

Multiplying both sides by 5,

7y / 5 x 5 = 5(y – 4)

=> 5 (y-4)

=> 7y = 5y – 20

=> 7y – 5y = – 20

=> 2y = – 20

=> y = −20 / 2 = – 10

=> y = – 10

QUESTION 6:

Solution:

3x + 2 / 3 = 2x + 1

=> 3x – 2x = 1 – 2 / 3

=> x = (3 − 2) / 3 = 13

=> x = 1 / 3

QUESTION 7:

Solution:

15(y – 4) – 2(y – 9) + 5(y + 6) = 0

15y – 60 – 2y + 18 + 5y + 30 = 0

=> 15y – 2y + 5y = 60 – 18 – 30

=> 18y = 12

=> y = 12 / 18 = 2 / 3

=> y = 2 / 3

QUESTION 8:

Solution:

3(5x – 7) – 2(9x – 11) = 4(8x – 13) – 17

=> 15x – 21 – 18x + 22 = 32x – 52 – 17

=> 15x – 18x – 32x = – 52 – 17 + 21 – 22

=> 15x – 50x = – 70

=> – 35x = – 70

=> x = −70 / −35 = 2

=> x = 2

Answered by Anonymous

1

Answer:

HEY BUDDY HOPE IT HELPS YOU

Step-by-step explanation:

RS AGGARWAL

QUESTION 1:

Solution:

8x + 3 = 27 + 2x

=> 8x – 2x

=> 27 – 3

=> 6x = 24

=> x = 24 / 6 = 4

=> x = 4

QUESTION 2:

Solution:

5x + 7 = 2x – 8

=> 5x – 2x = – 8 – 7

=> 3x = – 15

=> x = −15 / 3 = – 5

=> x = – 5

QUESTION 3:

Solution:

2z – 1 = 14 – z

=> 2z + z = 14 + 1

=> 3z = 15

=> z = 15 / 3 = 5

=> z = 5

QUESTION 4:

Solution:

9x + 5 = 4(x – 2) +8

=> 9x + 5 = 4x – 8 + 8

=> 9x – 4x = – 8 + 8 – 5

=> 5x = – 5

=> x = −5 / 5 = – 1

=> x = – 1

QUESTION 5:

Solution:

7y / 5 = y – 4

Multiplying both sides by 5,

7y / 5 x 5 = 5(y – 4)

=> 5 (y-4)

=> 7y = 5y – 20

=> 7y – 5y = – 20

=> 2y = – 20

=> y = −20 / 2 = – 10

=> y = – 10

QUESTION 6:

Solution:

3x + 2 / 3 = 2x + 1

=> 3x – 2x = 1 – 2 / 3

=> x = (3 − 2) / 3 = 13

=> x = 1 / 3

QUESTION 7:

Solution:

15(y – 4) – 2(y – 9) + 5(y + 6) = 0

15y – 60 – 2y + 18 + 5y + 30 = 0

=> 15y – 2y + 5y = 60 – 18 – 30

=> 18y = 12

=> y = 12 / 18 = 2 / 3

=> y = 2 / 3

QUESTION 8:

Solution:

3(5x – 7) – 2(9x – 11) = 4(8x – 13) – 17

=> 15x – 21 – 18x + 22 = 32x – 52 – 17

=> 15x – 18x – 32x = – 52 – 17 + 21 – 22

=> 15x – 50x = – 70

=> – 35x = – 70

=> x = −70 / −35 = 2

=> x = 2

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