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posted by Shivi on Wednesday, January 12, 2011 at 7:08pm.

1.Solve the simultaneous equations: 5x + 4y = 13 3x + 8y = 5

Multiply * -2 (5x + 4y = 13) -10x - 8y = -26 3x + 8y = 5 -7x = - 21 x = 3 substitute x = 3 in one of the equations and solve for y

Where do you get the -2?

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