4x9x50=200x9=1800
imadummy property
It is unknown for right now.
0.6b + 3c
The expression 2a - 9a is a subtraction problem involving two terms with the variable 'a'. To solve this, you need to combine the coefficients of 'a'. In this case, 2a - 9a simplifies to -7a. This is because you are subtracting 9a from 2a, which results in -7a.
-7a-7b
7a
The relevant expression is 7a.
4x9x50=200x9=1800
imadummy property
91
It is unknown for right now.
It looks like you've taken 'a' away from '7a' three times, so you probably have 4 of them left.
12a- 6a + a = 7a Since they all have the same variable, you can simply add and subtract 12-6 = 6 6+1 = 7
-2ab
9a + 1
Simplify each expression