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gewusel gewusel
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6 years ago
Solve the system of equations:    x +  y = 2.5
   0.2x -  y = 1.2
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Contemporary Business Mathematics with Canadian Applications

Contemporary Business Mathematics with Canadian Applications


Edition: 11th
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wrote...
6 years ago
x +  y = 2.5
0.2x -  y = 1.2

2x + 3y = 5
 x - 2y = 6

2x + 3y = 5
2x - 4y = 12
   7y = -7
    y = -1

x - 2(-1) = 6
x + 2 = 6
x = 4
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