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12345 [234]
3 years ago
10

Solve the system of equations using elimination 3x+y=27 -3x+4y=-42

Mathematics
2 answers:
Vikentia [17]3 years ago
8 0
Since the x terms have opposite terms we can just add the two equations together...

3x+y-3x+4y=27-42

5y=-15  then divide both side by 5

y=-3, and use either original equation to solve for x, <span>3x+y=27  becomes:

3x-3=27

3x=30

x=10 so the solution to the system of equations is the point:

(10, -3)</span>
nikdorinn [45]3 years ago
7 0
d) 10, -3

Hope I helped! ( Smiles )
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