makenziekruse
makenziekruse
09-01-2018
Mathematics
contestada
x + 2y = 7
3x - 2y = -3
Respuesta :
athenapadme1
athenapadme1
10-01-2018
Use Subtraction
1. Subtract
x+2y=7
3x-2y=-3
-------------
4x+0y=4 SIMPLIFY 4x=4
2. DIVIDE
4x=4
x=1
Substitute that into either of the original equations to get x=1, y=3
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