Question

andy has $14 more than jack together they have $56 how much dose each boy have

Answer 1

@bernardo2131341 Let's call Andy 'a' and Jack 'j'.

We know that
a = j +14

and also that
a + j = 56

so we can sub the first equation into the second.
(j +14) + j = 56
2j + 14 = 56
2j = 42
j = 21

Now that we have a value for j, we can sub this back into the first equation.
a = 21 + 14
a = 35

So Jack has 21 and Andy has 35.