How do you solve the following simultaneous equations? 5x+6y=3 2x-3y=12
5x+6y=3 2x-3y=12 6y=3-5x 2x=12+3y 3y=2x-12 Therefore, 6y=2(2x-12)=4x-24 4x-24=3-5x 9x=27 x=3
SI
Related Maths GCSE answers
All answers ▸Make d the subject of the formula: 3d + dxy = 4
Sean drives from Manchester to Gretna Green. He drives at an average speed of 50 mph for the first three hours. He then breaks and drives the final 150 miles at 30 mph. Sean thinks his average speed is 40 mph ,is he correct?
Solve t^2-t=3(7+t)
Solve these two equations simultaneously: 7x + y = 1 and 2x^2 - y = 3.