The answer should be a total of 3
1. Base presents the whole number
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6x-7+9x-8=90
15x=75
x=5
If you want more of an explanation just ask.
Answer:
384
Step-by-step explanation:
Im going to separate this into 2 shapes a square and a rectangle and add them together later
so the squares dimensions are 12 by 12
so 12*12=144
next is the rectangle so its dimensions are 12*20
so 12*20=240
240+144=384
Enjoy and good luck^^