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OpenStudy (lilt):
solve 3x+3y=10, and -9x-9y=-30
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OpenStudy (texaschic101):
do you prefer substitution or elimination ?
OpenStudy (texaschic101):
well...let me just do elimination because in this problem, it would be easier. 3x + 3y = 10 --->(3) -9x - 9y = -30 -------------- 9x + 9y = 30 (result of multiplying by 3 -9x -9y = -30 -------------add 0 = 0 This problem has INFINITE SOLUTIONS...that means whatever number you put in for x, it will work
OpenStudy (znappydooz):
Do substitution, I guess it would be easier and all
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