Make x the subject of the equation: 2x+7=5x

Making x the subject means we must rearrange the equation to get it into the form 'x='First, we need to get all the x's on one side; to do so, we will subtract 2x from each side to give 2x+7-2x=5x-2x. This simplifies to 7=3x.Now we must divide through by 3 on each side as we have 3 lots of x but we are looking to find 1 lot of x; 7/3 =3x/3.This then simplifies to 7/3=x. this is the final answer-unless otherwise stated, students should leave answers as a simplified fraction as this is more accurate that rounding a decimal.

Answered by Safiya M. Maths tutor

2844 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

prove that (3x+1)^2 - (3x-1)^2 is a multiple of 4 for all positive integer values of x


A bag has 3 red balls and 5 green balls. I take out 2 balls, without replacing them. What is the probability of choosing at least one red ball? Give your answer to 3 decimal places.


Solve simultaneously, 2x-3y=16 and x+2y=-6


(Q20 Non-Calculator paper, Higher Tier) Solve algebraically the simultaneous equations: x^2 + y^2 = 25 and y – 3x = 13


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