Answer: 
Step-by-step explanation:
Reformatting the input :
Changes made to your input should not affect the solution:
(1): Dot was discarded near "7.".
<u>STEP 1: </u>
Simplify 
<u>The equation at the end of step 1:</u>

<u>Multiplying exponential expressions:</u>
2.1
multiplied by

Final result is 
18,055
-
3,138
———-
14,927
14,927
+
18,055
———-
32,982
Im pretty sure tge answers -1.68426
1:50 => 1 part oil + 50 parts high-octane gasoline
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