Solve the simultaneous equation 6x + 2y = -3, 4x - 3y =11
6x + 2y = -3 (1)*3 4x - 3y = 11 (2)*2 18x + 6y = -9 (1) 8x - 6y = 22 (2) (1) + (2) = 18x +8x + 6y - 6y = -9 + 22 => 26x = 13 => x = 1/2 sub x into (1) => (6 * 0.5) + 2y = -3 3 + 2y = -3 2y = -6 y = -3
AP
Related Maths GCSE answers
All answers ▸Solve the equation (2x + 3 / x - 4) - (2x - 8 / 2x + 1) = 1
Solve these two simultaneous equations.
How do you find the area of a semi circle with a radius of 7cm?
(This was taken from a GCSE past paper)A bag of 24 spoons costs £19.95. A box of 18 forks costs £15.55. Bags and boxes cannot be split. Gregor decides to buy the same number of spoons as forks. He places an order to buy the smallest number of each