Factor using the GCF 12a - 30 5. Simplify -5(.2k + 1) - 2(.4k -2)
To factor 12a - 30, we can first find the greatest common factor (GCF) of the coefficients 12 and -30, which is 6. Then, we divide each term by 6 to factor out the GCF:
12a - 30 = 6(2a - 5)
To simplify -5(.2k + 1) - 2(.4k - 2), we can distribute the -5 and -2 to the terms inside the parentheses:
-5(.2k + 1) - 2(.4k - 2) = -1k - 5 - 0.8k + 4
Next, we can combine like terms:
-1k - 5 - 0.8k + 4 = -1.8k - 1