Solve simultaneously: 3x+2y=7 & x-2y=-3

Add the 2 eqns together to eliminate the y's to give: 4x=4. Divide by 4 to give x=1Now substitute x=1 into the first eqn: 3+2y=7. Subtract 3 from both sides -> 2y=4. Divide by 2 to give y=2.Now, check by substituting inot the second eqn: 1-2(2)=-3. This is correct, therefore we know we are correct!

KL
Answered by Katie L. Maths tutor

4185 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

x/x-1 - x/x+1 simplify


solve to 2 decimal places; (2x+3/(x-4)) - 2x-8/(2x+1) = 1


Increase 35 by 20%:


Find the exact length of side A in the triangle and give you answer in the simplest form. (It is a right angled triangle. Side C is (6+√(3)) and side B is (3 + 2√(3)).


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