13/21. you can’t simplify it anymore
Answer:

Step-by-step explanation:
Using standard form (Ax+By=C) equals 
2x-3b=c

now simplify 
Answer:
the answer is 2
Step-by-step explanation: you had to multiply a/b and you would of got 2
but then you gotta break it down
Answer:
A=61, B=74
Step-by-step explanation:
Because all the angles in a triangle add up to 180:
(2x+4) + (2x-9) + x = 180
If you solve that for x, you will get that x=35. Now you just plug in x to the angles A and B.
Answer:
ldk
Step-by-step explanation:
sorry