Question

3. Which of the following equations has x = 3 as a
solution?
A. 3x + 2(x + 5) = 40
B. 8.x + 2(x - 2) = 35 - 3x
C. 3.x + 9 = 33
D. None of these​

Answer 1

Answer:

B)

Step-by-step explanation:

8x+2x-4=35-3x

8x+2x-4=35-3x

10x+3x=35+4

13x=39

x=3

Answer 2

Answer:

8x + 2(x - 2) =35 - 3x

Step-by-step explanation:

8x + 2x - 4 = 35 - 3x

10x - 4 = 35 - 3x

take the values of x in left side and constant terms in right side

10x + 3x = 35 + 4

13x = 39

now put the value of x in the place of x

13(3) = 39

39 = 39

hence proved