Answer:I think it's C although I might be wrong
Step-by-step explanation:
Combine like terms
6x + 9 - 16x
6x - 16x = -10x
-10x + 9 = -21
-9 -9
-10x = -30
-10x/-10 = -30/-10
x = 3
Answer: x = 3
it is 15 to 35
cuz 3 plus 7 is 10 and 50 divided by 10 is 5 and then multiply 3 times 5 and 7 times 5 which equals 15 to 35 and 15+35=50
Odd = 433, 291
even = 728, 902, 774
The greatest common factor is exactly as it sounds: the greatest factors of two or more expressions.
Factorize the numbers and identify all common factors. To get the GCF multiply all common factors:
.
Common factors are: 2 and 2, their product is 2·2=4, then the greatest common factor is 4.