Translate to an equation. Thirteen less than six times a number is equal to 11 more than four times the number. What is the number?
6x-13=11*4x
it would be good to be able to do this 13 less than means -13+
six times a number means 6x if we use "x" to stand for "a number"
Thirteen less than six times a number becomes -13 + 6x or, switching the order (when you add, you can swap the order) 6x-13
is equal to is written as =
so how is it supposed to look when i put it all together because i got13-6*a=11+4*a
is that correct?
so far, we have Thirteen less than six times a number is equal to 6x-13=
it's ok to use "a" instead of "x" but think about this question: 1 less than 3? the answer is (I hope it is obvious) is 2. to get 2 we do 3 - 1 or -1 + 3 I translate 3 less than x as -3 + x (or x-3) and 3 more than x as 3+x (or x+3)
ok
11 more than four times the number 11 + 4x so all together we have 6x-13= 4x=11
so their is two = signs?
no, that was a typo 6x-13= 4x+11
i typed it in on my hw online and it says its wrong!
The words translate into that equation. You should practice that translation. The next step is to use algebra to solve for x. that is a different skill
The question is What is the number? we are not done yet. can you solve for x? in 6x-13= 4x+11 I would add -4x to both sides and then add 13 to both sides
6x=11 right?
let's start with the equation (which you get from translating the words to an equation) 6x-13= 4x+11 add -4x to both sides 6x - 4x - 13 = 4x - 4x + 11 on the right side of the = sign, you have 4x - 4x. that is 0 6x -4x - 13 = 0 + 11 on the right side 0+11 is 11 6x -4x - 13 = 11 on the left side you have 6 x's take away 4 x's. How many x's do you have ?
1
if you don't like x's, how about spoons? 6 spoons take away 4 spoons. How many spoons do you have ?
2
it works the same for x's. 6x's take away 4 x's is 2 x's we write that 6x - 4x = 2x that means 6x -4x - 13 = 11 simplifies to 2x -13 = 11
now add +13 to both sides of 2x -13 = 11
2x=24
x=12 right?
exactly
If we use 12 as the number in Thirteen less than six times 12 is equal to 11 more than four times 12 it should work out.
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