3x - 5y = 18 over
-10x + 5y = 10
Add them because the 5y's have the right symbols for us to add
-7x = 28
Divide
x = -4
Now you can plug in -4 for x in one equation, I would use the first equation!
3(-4) - 5y = 18
-12 - 5y = 18
Add 12
-5y = 30
Divide
y = -6
Your solutions are going to be:
x = -4
y = -6
To check your work plug x and y into one equation:
3(-4) - 5(-6) = 18
-12 + 30 = 18
18 = 18
Since 18 does equal 18 you know that your solution's work!
Answer:
this is very hard, I do not understand such math, I don't know
Answer:
1 . x
3
+ 3
x
2
y + 3
x
y
2 + y
3
2. x
3
- 3
x
2 y + 3
x
y
2 - y
3
3. a + b
4 . a - b
Step-by-step explanation:
Hope this answer helps you :)
Have a great day
Mark brainliest
Answer:
triangle with two equal sides.The angles opposite the equal sides are also equal.
Step-by-step explanation: