Slobs, can you answer my question when you're done?
Answer:
30+(2x+7)+63=180(sum of angles of triangle )
30+2x+7+63=180
2x+100=180
2x=180-100
x=80/2
x=40
Answer:
3 x= 9
3x-4+4=5+4
Step-by-step explanation:
........
Answer:
The error is in the middle: 2(-12) = -24 not 24.
Step-by-step explanation:
Answer:
12
Step-by-step explanation: