Hey I am having difficulties solving simultaneous equations? Please may you help me!

Yes of course.
I will start with an example. Try and solve these simultaneous equations I will talk you through the model answer below.
3x + y = -4 3x - 4y = 6
Notice both equations contain 3x we can therefore rearrange these equations to make both equal 3x
3x = -4 - y3x = 6 + 4y
Therefore we can make these equal to eliminate values of x and find y
-4 - y = 6 + 4y5y = -10y = -2
The substitute this y value into one of the equations
3x - 2 = -43x = -2x = -2/3

GW

Related Maths GCSE answers

All answers ▸

The y-intercept of A is 7. A also passes through point (7, 2). (a) Find an equation of A in the form y = mx + c. (b) B is perpendicular to A and also has a y-intercept of 7. Write down the equation for B in the form y = mx + c.


All tickets to the movie theatres cost the same price. Jessica and Thomas pay £84 together. Jessica pays £38.5 for 11 tickets. How many does Thomas Buy?


A ladder 5m long is leaning up against a wall. The foot of the ladder is 3m from the wall. How high up the wall does the ladder reach?


How do you find the nth term formula for a sequence with non-constant difference?