Supplementary angles add up to 180 degrees.
7x + 3x = 180 degrees.
Combine like terms.
10x = 180 degrees.
Divide both sides by 10
x = 18
Answer:30:36
Step-by-step explanation:
If you would like to solve the system of equations x + y = 3 and 2x - y = 6, you can do this using the following steps:
<span>x + y = 3 ... y = 3 - x
2x - y = 6
</span>_________
<span>2x - y = 6
</span>2x - (3 - x) = 6
2x - 3 + x = 6
3x = 6 + 3
3x = 9 /3
x = 9/3
x = 3
<span>y = 3 - x = 3 - 3 = 0
</span>
The correct result would be x = 3.
A factor of 20 but not a multiple of 5 would probably be 4
