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Mathematics 61 Online
OpenStudy (nightmarenight):

Help?!!!?!?!?! Solve, using the substitution method. m + n = 5 m – n = 3 Possible Answers: There is no solution. The solution is (2, –1) The solution is (4, 1) There are an infinite number of solutions. Solve the given system, using the substitution method. y = 3x – 7 6x – 2y = 12 Possible Answers: (14, 12) (12, 14) There is no solution. There are an infinite number of solutions.

OpenStudy (superdavesuper):

First question: add 1st n 2nd equation together n solve for m. U can then calculate n :)

OpenStudy (superdavesuper):

Second question: multiple 1st eqn by 2 then add to 2nd eqn; solve for x; then y.

OpenStudy (nightmarenight):

hmm...I'm still lost..

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