Please solve the following simultaneous equations 4x + 7y = 336 y = 6x + 2

Step 1 - through previous experience realise this equation can be solved by the substitution methodStep 2 - rearrange for the part you want to sub in, in this case it is done for us as Y is the variable we will sub inStep 3 - where there is a y in the equation replace it with 6x +2 this gives us 4x + 7(6x +2) = 336Step 4 - expand the brackets 4x + 42x + 14 = 336Step 5 - collect like terms to get 46x = 322Step 6 - divide through by 46 to find the value of x, x = 7

ES
Answered by Eleanor S. Maths tutor

3361 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

y is directly proportional to (x-1)^2. When x=5, y=4. Find y when x=7.


A rectangle has an area of 20 cm^2.  Its length and width are enlarged by scale factor 3.  Find the area of the enlarged rectangle.


How do I factorise quadratic equations?


At a concert, the number of men, women and children can be expressed with the following ratio: 6:11:4 There were 6525 more women than men. How many children were at the concert?


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