Verify the following:
(i) 23 ~ {7 + (-2)} = 23 x 7 + 23 × (-2)
Answers
Answer:
This is the starting equation. Note that using order of operations (solve brackets first, followed by multiplications and divisions, then additions and subtractions). With this rule, we’ll add brackets to the right hand side, just to make it easier to set our priorities in this equation.
23(7-2) =(23×7)+(23×-2)
NOTE: This is the same equation. I have just added the brackets to emphasize that the multiplication should be done first before the addition: (23×7) and (23×-2) first, then add both the products.
At the same time, since the order of operation says that brackets should be solved first, we do 7–2 on the left hand side.
23(5)=(161)+(-46)
This now makes it much simpler. Simply solve the left side - multiply 23 by 5
115=(161)+(-46)
Now, the last step! Solve the right hand side.
115=(161)+(-46)
115=161−46 (Adding a negative number is the same as subtracting the number)
115=115
YOU’VE VERIFIED IT!
How would one solve 23*[7+(-2)]=23*7+23*(-2)?
If 2+2=7 then what is 7+7?
What is 2/7 of 49 + 23-2 x 5?
What is 2+2*2-7^2?
What is the answer for 23+4×7?
By actually performing the necessary multiplication in the equation.
First, I’m assuming that underscore _ to the right of the equation was intended to be a minus sign - , in which case the equation would be this:
23(7–2) = 23*7 + 23* -2
I can tell you that, indeed, they are equal; you’ve literally expressed the same value in two separate ways, and thus, again, they are equal. But let’s go through the motions to illustrate it clearly.
23(7–2) = 23*7 + 23 * -2
Incidentally, the right side can be written as 23*7 - 23 *2
Perform the subtraction first, and then the multiplication left-to-right:
23(5) =
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How would one solve 23*[7+(-2)]=23*7+23*(-2)?
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What is 2/7 of 49 + 23-2 x 5?
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What is the answer for 23+4×7?
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Answer:
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