5n-7=33 please solve?
回答 (13)
✔ 最佳答案
5n-7=33
5n=33-7
5n=40
5n/5=40/5
n=8
5n-7=33
add 7 to 33 = 40
then divide 40 by 5
n = 8
5n-7=33 original equation
5n-7=33
+7 +7 add 7 to eliminate the 7 to leave a variable one
side n a contant* on the other
5n=40 what you end up with
5n=40 divide 5 on both sides to leave a variable and a
/5 /5 contant
n=8 your answer is n=8 after dividing
*a contant is a number in an equation without a variable*
5n-7=33 (you just need to combine the like terms...like
terms means a term that have the characteristic of each other but not exactly same in quantity...so it will become.)
5n=33+7 (and when transposing any number across the equall sign,the numbers' adjacent operaion sign will change,,,example for this is the number above,,from negative ( - ) 7,,it becomes positive ( + ) 7 after crossing the equall sign.....then simplify it)
5n=40 (then divide both sides by 5 for the "n" to be left,,,
take note that we are looking for the value of n
and we can only do it if it is not accompanied
by any number)
5n/5=40/5 (then both 5 in "n" cancells themselves....just perform the indicated operation in simplifying)
n=8 ---------ANSWER
.......>
5n -7 =33
transpose -7
you will get,
5n = 33 + 7
5n = 40
divide both sides by 5
n = 40/5
n =8
5n - 7 = 33
5n = 33 + 7
5n = 40
n = 40/5
n = 8
收錄日期: 2021-05-01 10:53:09
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