Answer:
The best estimate for 43x78 is 40x80
Step-by-step explanation:
43 rounded to the nearest ten is 40.
78 rounded to the nearest ten is 80.
The answer to 40x80 is 3200
Answer: B (x = 4)
- x = 2 - 3x + 6 combine like terms
- x = -3x + 8 add 3x
2x = 8 divide by 2
x = 4
Obviously, there is 784/7, but there is a less common kind of expression that also works. Since a fraction is similar to a division expression, you can flip 7 to make 1/7. The other expression could be 1/7 x 784.
So the two expressions could be 784/7 and 1/7 x 784
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hope it helps
