using the triangle sum theorem, how would combine the two x's?
By adding them.
2x+90+13+23=180
2x+126=180
2x+126 = 180
-126 -126
2x=54
2x/2 = 54/2
x=27
using the triangle sum theorem, how would combine the two x's?
By adding them.
2x+90+13+23=180
2x+126=180
2x+126 = 180
-126 -126
2x=54
2x/2 = 54/2
x=27
I am going to assuming your 3 angles are:
90
x + 13
x + 23
Just add up the left side/simplify just like you would any algebra problem
(90) + (x +13) + (x + 23) = 180
2x + 126 = 180
2x = 54
x = 27
So your 3 angles are
90
(27) + 13 = 40
(27) + 23) = 50
Double check that every adds up to 90?
90 + 40 + 50 = 90
90 = 90 good
90+x+13+x+23=180
Rearrange it to make it easier to look at. All x's first, then numbers.
x + x + 90 + 13 + 23 = 180
one x plus one x equals to two x's
2x + 90 + 13 + 23 = 180
Add the numbers on the left side
2x+ 126 = 180
Subtract 126 on both sides
2x +126 - 126 = 180 -126
2x = 54
Dividing both sides by 2
x = 54/2
x = 27