Solve the simultaneous equations, 8x + 4y = 4 and 6x - 18y = 16
8x + 4y = 4,4y = 18 - 8x,2y = 2 - 4x,18y = 18 - 36x,6x - 18y = 16,18y = 6x - 16,6x - 16 = 18 - 36x,42x = 34,x = 34/42 = 17/21,18y = 90 - 36(17/21),18y = 426/7,y = 71/21
DG
Related Maths GCSE answers
All answers ▸Given that f(x ) = 4x^3 + 12, evaluate f ( −2) .
Ian's commute to work is 5km. He needs to be there by 9.00am. He travels at 10 km/h, what time does he need to leave home?
Solve the equation 18x^2-3x=6
How do I solve the simultaneous equations 2x - y = 3 and 3x + y = 9