Question

Suppose that you were to solve this problem by the following method: frac{4x+8}{4} = frac{60}{4} x+8 = 15 -8 -8 x = 7. Part B The answer here, $x = 7$, is not in the interval that you selected in the previous part. What is wrong with the work shown above? To correct the work shown before Part B in the first step, 60/4 should yield 16, not 15. in the last step, the value 8 should be added rather than subtracted. in the first step, both terms on the left should be divided by 4. in the last step, 15 should be subtracted from each side.

          Suppose that you were to solve this problem by the following method:
frac{4x+8}{4} = frac{60}{4}
x+8 = 15
-8		-8
x = 7.
Part B
The answer here, $x = 7$, is not in the interval that you selected in the previous part. What is wrong with the work shown above?
To correct the work shown before Part B
in the first step, 60/4 should yield 16, not 15.
in the last step, the value 8 should be added rather than subtracted.
in the first step, both terms on the left should be divided by 4.
in the last step, 15 should be subtracted from each side.

$Suppose that you were to solve this problem by the following method: frac4x+84 = frac604 x+8 = 15 -8 -8 x = 7. Part B The answer here, x = 7, is not in the interval that you selected in the previous part. What is wrong with the work shown above? To correct the work shown before Part B in the first step, 60/4 should yield 16, not 15. in the last step, the value 8 should be added rather than subtracted. in the first step, both terms on the left should be divided by 4. in the last step, 15 should be subtracted from each side.$

Added by Robert M.

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