Supplementary angles always equal 180. Then you just solve from there.
7x+5x+24=180
12x+24=180
-24 -24
12x=156
/12 /12
X=12
Answer:
Subtract 6.4 from each side of the equation.
Step-by-step explanation:
3.5 n + 6.4 = 42.5
-6.4 = -6.4
3.5 n = 36.1
3.5n/3.5n= 36.1/3.5n
n=10.3142857
<em>Hope it helps!!!!</em>
Answer:
2c+8
Step-by-step explanation:
this is because we are using 2 to open up the brackets. You will multiply c by 2 and 4 by 2.