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1 If: 2x+5y = 16 and -5x-2y = 2

2 Then: 2*(2x+5y =16) and 5*(-5x-2y = 2) is equvalent to the above equations

3 Thus: 4x+10y = 32 and -25x-10y = 10

4 Adding both equations: -21x = 42 or x = -2

5 Solutions by substitution: x = -2 and y = 4

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โˆ™ 2014-09-10 14:37:45
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Q: How do you find the solutions of the simultaneous equations of 2x plus 5y equals 16 and -5x-2y equals 2 showing work in step by step stages?
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