Answer:
1.2x-9
Explanation:
First, use the distributive property to expand 0.4(3x-20). By definition of the distributive property, this is equal to (0.4)(3x) + (0.4)(-20) = 1.2x-8.
Now, compute the total for -1+0.4(3x-20) = -1+1.2x-8 = 1.2x-9
-1+0,4*3x + 0,4*-20=
-1+1,2x-8= 1,2x-9
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