I'm probably answering this incorrectly but I'll try.
2.50(4) = 10
50(16) = 800
10 + 800 = 810
The extra is confusing me. Does it come from the very beginning of the trip or does it only count after the first 4 kilometers?
Answer:
x=3
Step-by-step explanation:
start with 7x=21
divide each side by 7 to get your answer:
x=3
First you need to distribute the negative to 5,3x and -4 now you have this:
-3.5x+7-5.3x +4 rearrange and combine like terms (matching x's with x's etc.)
-3,5x -5.3x +7+4
-8.8x +11 your final answer there are no more like terms that you can combine.
X=12 I believe because 4x3x1=12