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3 years ago

What value of "a" makes the system 3x-y=17 and ax+y=-7 have no solution?

Mathematics

1 answer:

Norma-Jean [14]3 years ago

5 0

Answer:

y=-7-ax

3x-(-7-ax)=17

3x+7+ax=17

3x+ax=10

x(3+a)=10

x=10,3+a=10 a=10-3 a=7

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