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

2988 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve 8x + 9y = 3 and x + y = 0.


Solve the pair of simultaneous equations {4x + y = 5, 3x - y = 2} using i) a graph and ii) an algebraic method


If a cuboid of width and height-8m with a volume of 896m^3, work out the length of the cuboid and distance between two opposite points


Sketch and label the graph of y=x^2 -5x+6


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences