Solve simultaneously 2x-y=2, 3x+2y=17 to calculate values of x and y.

This problem can be solved through substitution. The first equation provided in the question should be rearranged to give y=2x-2. This equation for y can be directly substituted into the second equation. This would give, 3x+2(2x-2)=17 therefore eliminating the y term. By expanding this equation, we get 3x+4x-4=17 which simplifies further down to 7x=21. This gives a value of x=3. In order to calculate y, we can sub this value of x into any of the equations provided in the question. For example, substituting into the first equation gives 6-y=2. As a result, rearranging this gives a value of y=4.

Answered by Wasif R. Maths tutor

4752 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

I don't understand, what do you use sin, cos and tan for?


Solve algebraically the simultaneous equations x2 +y2 =25 and y – 3x = 13


Solve 4(3x – 2) = 2x – 5


Multiply and simplify the following: (x-8)^2


We're here to help

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