Solve the following simultaneous equations: 3x+y-2z = -2, y+4z = 1, 10x+2y+5z=26

x=3, y=-7, z=2

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White paint costs £2.80 per litre. Blue paint costs £3.50 per litre. White paint and blue paint are mixed in the ratio 3 : 2. Work out the cost of 18 litres of the mixture.


Solve the following simultaneous equations: x^2 + y^2 = 12, x - 2y = 3


solve x^2 - x - 6 = 0


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