Question

6. What should be the value of p if the value of 3x + 4x-p is 5, when (a)x= -1. (b)x=1?​

Answer 1

Answer:

a) p=-12

b) p=2

Step-by-step explanation:

a) 3x+4x-p=5

7x-p=5

7(-1)-p=5

-7-p=5

-p=5+7

p=-12

b) 3x+4x-p=5

7x-p=5

7(1)-p=5

7-p=5

-p=5-7

p=2

Answer 2

Step-by-step explanation:

$\huge\underline{\rm\pink{~✞~JESUS~✞~}}$

$\sf\underline\green{Given}$ :-

• 3x + 4x - p = 5

❥ x = -1

❥ x = 1

$\sf\underline\green{To \: find }$ :-

• The value of p

$\sf\underline\green{AnSweR}$ :-

• If x = -1

✨ 3x + 4x - p = 5

✨ 3(-1) + 4(-1) - p = 5

✨ -3 + (-4) - p = 5

✨ -3 -4 - p = 5

✨ - 7 - p = 5

✨ - p = 5 + 7

✨ - p = 12

❤ p = -12 ❤

• if x = 1

$\blue{~✿~}$ 3x + 4x - p = 5

$\blue{~✿~}$ 3(1) + 4(1) - p = 5

$\blue{~✿~}$ 3 + 4 - p = 5

$\blue{~✿~}$ 7 - p = 5

$\blue{~✿~}$ -p = 5 - 7

$\blue{~✿~}$ -p = -2

$\blue{~✿~}$ p = 2

❤ p = 2 ❤

$\huge\underline{\rm\pink{~✞~JESUS~✞~}}$