Solve the simultaneous equations: 3x + y =11; 2x + y = 8

subtract one from the other to eliminate y: 3x+y=11; 2x+y=8 --> x=3substitute value of x back in and solve for y: 3(3)+y=11; 9+y=11; --> y=2

IH

Related Maths GCSE answers

All answers ▸

Katie buys: 3 pens costing £2.20 each, 1 rubber costing £1.60 and 2 pencils. She pays with a £10 note and a £2 coin. She gets 20p change. What was the price of each pencil?


Solve 2x + 10 = 4x + 6


Factorise x^2 - 6x + 9 = 0


How do I solve the equation x^2 + 6 = -5x