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

4086 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Work out the equation of the tangent to a circle of centre [0,0] at the point [4,3]


How do I factorise and solve 2x^2+4x-6=0?


Solve the equation 18x^2-3x=6


Factorise (x^2 +3x-18)=0, solving for x


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences