Transpose all numbers in the left side to the right side and simply change their sign. If negative on the left side, when transposed, it becomes positive.
1. x - 10 = 22
... becomes ...
x = 22 + 10
... giving us the answer of ...
x = 32 ... Letter C.
2. x = 8 + 10 + 27
x = 45 ... Letter E.
3. -11 + x + (-48) = 25
x + (-48) = 25 + 11
Again, -11 becomes a +11 when transposed to the right side.
Thus, x + (-48) = 25 + 11
Then, we should add first the right side before transposing giving us...
x + (-48) = 36
Now, we all know that when multiplying a negative sign to a positive sign, it is always negative.
Hence, x - 48 = 36
Then, we transpose -48 to the right side which becomes...
x = 36 + 48
x = 84 ... Letter D
4. x - (-16) = 12 + 13
x - (-16) = 25
In contrast with number 3, when multiplying negative sign to negative sign, it becomes positive.
Answers & Comments
Answer:
1. C
2. E
3. D
4. A
5. B
Step-by-step explanation:
How I get the answer?..
1. x - 10 = 22
(left) = (right)
Transpose all numbers in the left side to the right side and simply change their sign. If negative on the left side, when transposed, it becomes positive.
1. x - 10 = 22
... becomes ...
x = 22 + 10
... giving us the answer of ...
x = 32 ... Letter C.
2. x = 8 + 10 + 27
x = 45 ... Letter E.
3. -11 + x + (-48) = 25
x + (-48) = 25 + 11
Again, -11 becomes a +11 when transposed to the right side.
Thus, x + (-48) = 25 + 11
Then, we should add first the right side before transposing giving us...
x + (-48) = 36
Now, we all know that when multiplying a negative sign to a positive sign, it is always negative.
Hence, x - 48 = 36
Then, we transpose -48 to the right side which becomes...
x = 36 + 48
x = 84 ... Letter D
4. x - (-16) = 12 + 13
x - (-16) = 25
In contrast with number 3, when multiplying negative sign to negative sign, it becomes positive.
Therefore, x - (-16) = 25 becomes...
x + 16 = 25
Then, transpose...
x = 25 - 16
x = 9... Letter A.
5. x - (-27) = 35 - 12
The same situation with #4...
So, x + 27 = 23
gives us...
x = 23 - 27
x = (-4)... Letter B.
Verified answer
Answer:
1. C
2. E
3. D
4. A
5. B
Step-by-step explanation:
SANA NAKATULONG AKO...