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1.Solve the simultaneous equations:

5x + 4y = 13

3x + 8y = 5

2 answers

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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