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.
Do the coefficients first. Since 5 is a factor of 15, it is automatically the GCF. Choose the lowest power of the common variables. The GCF is 5b.
The expression 2b x 5b can be simplified by multiplying the coefficients (2 and 5) together to get 10, and then multiplying the variables (b and b) together to get b^2. Therefore, the answer is 10b^2.
60b2 you multiply the coefficients then the exopnients 5b1 (next to variables there are invisible exonients) x 12b1 ______ 60b2 (when multiplying like variables you add the exponients)
5b + 5b = 2 x 5b
The GCF is 5b.
9a-99 = -90
It is the same as: 9a -4a = 5a
It is: 9a-a-a = 7a
2a+5b isn't possible the answer is still 2a+5b.
9a - 8a = a
If: 9a = 18b Then: a = 2b