How do I rearrange and make y the subject in equations such as "(y/4) - X = 1"?

The aim is to finish with an equation that looks like "y = .....". We want Y and X on separate sides.The main thing to remember is that whatever you do to one side of the equation, you also do to the other. For example, you could times the left side of any equation by 2, as long as you also do that to the right side. In this example, we want to end up with "y=" so the first thing we want to do is move the "x" to the other side. To do this, look at the left side. What could you do to make the X disappear? If you added 1X then the equation would become "(y/4) = 1+X". Now we're nearly there. The next thing to do is to multiply by 4, which gives you "y = 4(1+X)". You could also write the answer as " y = 4 + 4X".

Answered by Dulcie S. Maths tutor

2423 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Find the volume of a right angled triangular prism with an angle of 28 degrees, hypotenuse of length 10 cm, and projected length of 12.5 cm. Give your answer in cm^3, to three significant figures.


How do you add or take away fractions? E.g: what is 1/3 + 3/4


In a group of 120 people, 85 have black hair, 78 have brown eyes and 20 have neither black hair nor brown eyes. Find the probability of a random person being picked having black hair, given they have brown eyes


What is the sum of 3/5 and 7/8?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences