Operate your equation with respect to your variable. Add, subtract or multiply, anything but equally for all the sides of the equation.
[ You can post particular question, for practical understanding ]
Hope this helps!
Answer:
46
Step-by-step explanation:
Since we know the value of the variable c, we can substitute 20 for c
2c + 6
2(20) + 6
40 + 6
46
180-145 will give you your answer cause when its a triangle they all = 180
so you add 80 + 65 = 145
so 180-145
