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Solve by eliminnation methods

2x-4y=5
2x-4y=6
solve the system by elimination method
5x+2y= -13
7x-3y=17
Solve
x+6<-7 or x+6>4
Determine whether the given numbers are solutions of the inequality
8,-10,-18,-3
y-8>2y-3
Solve by the substitutioj method
2m+n=9
m-5n=10

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1 answer

  1. Please post such problems separately and show your work. If you are unfamiliar with the elimination and substitution methods for solving simultaneous equations, referenc material can be provided.

    Your first question has no solution because the two equations are incompatible. They represent two parallel lines.

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