Work out the values of x and y using the equations 2x + 3y = 18 and x + y = 6

First, we need to identify what type of question this is. Since there are two equations with two unknown values, we can conclude this is a simultaneous equation problem. The fastest way to solve the question is by eliminating one of the unknown values: x or y, then after we find out what x or y is, we can then use this information to find what the other unknown value is. First step: We need to label our equations so the subsequent steps will be easier to follow. 2x + 3y = 18 (1) x + y = 6 (2) Second step: using (2), we derive x=6-y (3) Third Step: We substitute (3) into (1), giving (6-y)*2 +3y=18 => 12-2y+3y =18 => 12+y=18 => y=6Fourth Step: using (3), x=6-6=0 Final Step: Final check by substituting the values we found into (1) and (2) to verify our answers.

Answered by Rebecca H. Maths tutor

4491 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

In a sale, a bag goes on sale and the price is reduced by 20%. The sale price is £29.40. What is the original price of the bag.


if b is two thirds of c. 5a = 4c Work out the ratio a : b : c


The normal price of the pair of shoes is £28. In a sale the price is reduced by 35%. What is the new price of the shoes?


Solve x^3+20x^2=125x


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences