We have two linear equation:
x + 3y = 17
3x + 2y = 23
We substitute x = 17 - 3y in the second equation and we have:
3(17 - 3y) + 2y = 23
51 - 9y + 2y = 23
7y = 28
y = 4
x + 3y = 17
3x + 2y = 23
We substitute x = 17 - 3y in the second equation and we have:
3(17 - 3y) + 2y = 23
51 - 9y + 2y = 23
7y = 28
y = 4
Now we find x:
x = 17 - 3y = 17 - 3*4 = 17 - 12 = 5
x = 5
x = 5
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