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Juli2301 [7.4K]
3 years ago
9

Help Please

Mathematics
1 answer:
fredd [130]3 years ago
7 0
\left \{ {{x+y=28} \atop {4x+3y=100}} \right. 
 \left \{ {{x=28-y} \atop {4(28-y)+3y=100}} \right. 
112-y=100, 12=y,  x=16, y=12
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