Question 131956

Let x=son's age now
And let y=father's age now

Now we are told that:

4(x-2)=y-2------------------------eq1

We are also told:

3(x+3)=y+3-----------------------------eq2

subtract eq1 from eq2 and we get:

3(x+3)-4(x-2)=5  get rid of parens

3x+9-4x+8=5 or
-x+17=5 subtract 17 from both sides
-x+17-17=5-17 collect like terms

-x=-12  divide both sides by -1
x=12------------------------------son's age now

substitute x=12 into eq1

4(12-2)=y-2
40=y-2  add 2 to each side

40+2=y-2+2

y=42----------------------father's age now

CK

4(12-2)=42-2
40=40
also
3(12+3)=42+3
45=45


Hope this helps----ptaylor