Ok, i was just on a site for tutoring but it isn't making much sense to me! What steps do i follow through when doing this? y=3x+7 y=x-9
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To solve it, set the two expressions equal to each other. $\displaystyle 3x+7 = x-9$ Then solve for x, to get: $\displaystyle x=-8$
ok, so on one like y=2x+3 y=3x+1 itll be 2x + 3=3x+1? and solve from there? aren't you suppose to change signs when bringing it over?
Switch signs? Sort of, let me give you a step by step version of this: $\displaystyle 2x+3=3x+1$ Subtract 1 from both sides: $\displaystyle 2x+2=3x$ Subtract 2x from both sides: $\displaystyle 2=1x$ So: $\displaystyle x=2$ Do you see?
I think so. So on one like y=2x-10 y=4x-8 itll be 2x-10 = 4x-8 2x=-2 x=-1? ha i suck at combining like terms and what not lol.
Yeah, it looks like you've got it now.
Yay! Thanks for your time! = ]
Originally Posted by topaz192 Ok, i was just on a site for tutoring but it isn't making much sense to me! What steps do i follow through when doing this? y=3x+7 y=x-9 Please do not double post. User warned. -Dan
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