Subtract 7x on both sides of the equal sign (it'll cancel out) then -3=-3 which makes a true statement.
Answer:
1st choice - 1st line- Distributive property applied incorrectly
Step-by-step explanation:
3(a-2) should be 3a-6
Distance southward = 6x = 400, so x=66.66
total distance = 7x+x=8x = 533.33m
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