Question

Anil brother is 6 years more than three times anil's age if anil's brother is 21 years old a) set up an equation to find anil's age be b) check whether the value of (x= -5) is a solution to the above resultant equation c) solve the resultant equation (Anil's age) by trial and error method​

Answer 1

Answer:

(a) equation:

21 = 3x + 6 (eq 1)

(b) Put x = -5 in eq 1

21 = 3×(-5) + 6

21 = -9

which is not possible

So, x = -5 is not the solution

(c) 21 = 3x + 6

x = 5 years

So, Anil is 5 years old