You have to get the x to one side so you'll subtract 3x from -6x and 3x from 3x, the 3x will cancel out and -6x - 3x is -9x-7=11, you have to add 7 from both sides the 7+7 cancels out and also add 11+7 which leaves -9x=18, you have to divide -9x/-9 and do 18/-9, which gets you x=-2. Here's the work shown if you didn't what i said...
-6x-7=3x+11
-3x -3x
-9x-7=11
+7 +7
-9x=18
-9 -9
x=-2
Answer:
A is the answer
Step-by-step explanation:
I think
You have to take the amount of money payed, which in this case is 45.50, and divide it with 7.
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Find the multiplier:
1 - (30/100) = 0.7
Multiply the price by this:
99.50 x 0.7 = 69.65.
You would pay $69.65
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