Question

PLEASE HELP MEE!!
If 2x+3 = 7 and 3x - 1 = 4 + y, the value of y is *
1. 2
2. 0
3. 1
4. 6
If 2x+5 = -25 and -3m -6 = 48, what is the product of x and m? *
1. -270
2. -33
3. 3
4. 270

Answer 1

Answer:

2x+3=7

2x=7-3

2x=4

x=4/2=2

putting x=2 in 3x-1=4+y

3×2-1=4+y

5=4+y

5-4=y

y=1

Answer 2

Answer:

( i ) The correct option is 3. [ value is 1 ]

( ii ) The correct option is 4. [ value is 270 ]

Step-by-step explanation:

( i ) 2x + 3 = 7

=> 2x = 7 - 3

=> 2x = 4

=> x = 4/2 = 2

Now, we find the value of y . putting x = 2

3x - 1 = 4 + y

=> 3 × 2 - 1 = 4 + y

=> 6 - 1 - 4 = y

=> y = 1

Therefore , the value of y is 1

( ii ) First we have to find the value of X

2x + 5 = - 25

=> 2x = - 25 - 5

=> 2x = - 30

=> x = -30 / 2

=> x = - 15

Now , we find the value of m

-3m - 6 = 48

=> - 3m = 48 + 6

=> -3m = 54

=> m = -54 / 3

=> m = - 18

ATQ, now we find the product of X and m

so , X × m

= - 15 × - 18

= 270