Question

verify by substitution that:the root of 3x +4=13 is 3

Answer 1

If root of 3x+4=13 is 3 then if we substitute 3 in place of x then we

must get 3x+4-13=0 ......

=3×3+4-13

=9+4-13

=13-13

=0

So,3 is the root of 3x+4=13

Answer 2

Answer:

If root of 3x+4=13 is 3 then if we substitute 3 in place of x then we

must get 3x+4-13=0 ......

=3x3+4-13

=9+4-13

=13-13

=0

So,3 is the root of 3x+4=13