Answer:
-1 = 1x
Step-by-step explanation:
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Answer:
Pic 1: 
Pic 2: 
Step-by-step explanation:
<u>Picture 1:</u>
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First, add the 2x and x together for 3x
Then add 3 to both sides of the equation
Finally, divide each side by 3.
<u>Picture 2:</u>
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First, add 7x and x together for 8x
Then, minus 20 from both sides of the equation
Finally, divide each side by 8.
551 Blocks, 26 Layers. 551 divide by 26= 31 blocks per layer
A because 16x9=144 and 4x6=24 and 144-24=120
The answer for this question is letter B