notes

yes, ok well i was supossed to scribe a while ago but I'm computer illiterate so i never figured out how to get a stupid picture on here until now. Anyways here we go,

Question on the left:

ok so the first thing you do with this is 2x -9 = x +5

add 9 to both sides ---- > +9= x +5 + 9

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now becomes---> 2x= x + 14

the next step is to get the x's on the same side

bring the x on the right to the left. ----> 2x = x + 14

-x = -x

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now your equation becomes -----> 2x - x = 14

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the x is already by itself ------> x = 14

ok so now lets move on to the question on the right.

so the first thing you do is add it all together.

--> 3x + 10 +7x + 70

becomes --> 10x + 80

ok so we know the rhombus is supplementary so it should add up to 180.

--> 10x + 80 = 180

what is x?

bring 80 to the other side--> 10x = 180 - 80 <-- because the value becomes negative

--> 10x = 100

-->divide both sides by 10

and you get x = 10

so now that we know x is 10 we can apply it to the equation

3(10) + 10

30 + 10 = 40 <--this is the angle so that must mean 7x + 70 is 140 because it has to equal 180.