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Harman [31]
3 years ago
12

Solve system by subsubstitution? 14x-2y=46 -7x+y=-23

Mathematics
1 answer:
e-lub [12.9K]3 years ago
8 0
14x-2y=46 \\
-7x+y=-23 \\ \\
\hbox{solve the 2nd equation for y:} \\
-7x+y=-23 \\
y=7x-23 \\ \\
\hbox{substitute 7x-23 for y in the 1st equation:} \\
14x-2(7x-23)=46 \\
14x-14x+46=46 \\
14x-14x=46-46 \\
0=0 \\ \\
\boxed{\hbox{infinitely many solutions}}
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