Answer:

Step-by-step explanation:
Here, the given expression is

Now, simplifying the brackets, we get
= 
Now, operate on the like terms.
= 
=
Hence, the given expression is simplified to the quadratic equation
Answer:
0
Step-by-step explanation:
0
15 3/5 - (-5 2/10) =
15 3/5 + 5 2/10 =
15 + 5 = 20
3/5 + 2/10 = 6/10 + 2/10 = 8/10 reduces to 4/5
20 + 4/5 = 20 4/5
so ur answer is 20 4/5
Answer:
x = 0
Step-by-step explanation:
Multiply the first equation by -3 and add the second equation.
-3(-x +2y) +(6y) = -3(6) +(x +18)
3x -6y +6y = -18 +x +18 . . . . eliminate parentheses
3x = x . . . . . . . . .simplify
2x = 0 . . . . . . . . subtract x
x = 0 . . . . . . . . . .divide by 2
X= base
one side= x-6
other side= 4+x
x+x-6+4+x = 43
3x=43+2
x=15 length of base