Question

Help friend plz
I will mark Brain last
if U did it​

Answer 1

Answer:

both are b

Step-by-step explanation:

because on adding 10 to a number you get 20 = x +10=20

and B again because 7 times a number is 42 so= 7x = 42

as simple as that

Answer 2

Answer:

x+10=20

7x=42

Step-by-step explanation:

we know that adding 'x' to 10 will give 20

although we don't know that what is value of x thus equation will be x+10