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.

RH
Answered by Rebecca H. Maths tutor

6348 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

In a class there are 57 students. Of these 32 study Spanish, 40 study German and 12 students study neither. How many students study Spanish but not German?


Factorise x^2 + 2x - 3


Make a the subject of the formula f=(a+1)/2


Sue has a cow farm. Her cows produced on average 25 litres of milk every day for 55 days. Sue bottles the milk in 1/2 litre bottles. How many bottles will Sue need to bottle all the milk.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning