Translating in mathematics
usually involves changing a verbal phrase, or sentence, into a
mathematical phrase, or sentence.
In this lesson we will do the reverse.
We will translate a mathematical phrase, or sentence,
into a verbal phrase.
Let's look at an
x + 13 = 20
"A number increased by
thirteen is twenty."
another (a little tougher)....
3y - 7 = 2y + 8
"When three times a number is
decreased by seven,
the result is the same as when two times the same number
is increased by eight."
And a little
85 - 3(a + 7)
"Eighty-five decreased by
three times the sum of a number and seven."
Let's try a
little multiple choice this time...
Choose the mathematical
sentence which matches
the given verbal sentence.
is subtracted from five times a number the result is six."
a.) 8 - 5x = 6
b.) 5x - 6 = 8
c.) 5x - 8 = 6
d.) 8 - 6x = 5
for the clues.....
In subtraction, the amount you subtract "from" is written first.
In the sentence we are subtracting "from" "five times a number"
That means that "5x" must be written first.
Therefore only choices "b" and "c" could be correct....
"the result" means "equals"
In the sentence "the result is six", is the same as "equals six"
Only choice "c" equals six....
So the correct translation is choice "c"
"5x - 8 = 6"
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