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11-11-2014
Mathematics

contestada

Solve the simultaneous equations:
4x - y = 22
3x + 4y = 26

Respuesta :

11-11-2014

4x - y= 22 /x 4
3x+4y=26

16x - 4y = 88 }+
3x + 4y = 26

16x + 3x - 4y + 4y = 88 + 26
19x = 114 / :19
x = 6

3x + 4y = 26
4y = 26 - 3*6
4y = 8 /: 4
y = 2

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