Start with working out the brackets.

Try to form an equation with one variable from the given conditions.

Start with adding 4 both sides.

Try to form the two equations from the information given and then work them out.

Change the conditions given into linear equation and then work out.

Convert the relatiuon into a linear equation and then work out.

Put them in an equation with one variable and then work out.

Arrange them in a linear equation and then work out the age.

Start with multiplying by 4 first and then, by 6 both sides.

Try and work out the brackets first. After that, go for subtracting 2/5.