solve: 18x-(8x-7)=67?

18x - (8x-7) = 67

18x -8x+ 7 = 67

10x = 60 (you bring over the +7 to become -7, then 67 -7 = 60)

x = 6

2007-09-20 15:14:00 · answer #1 · answered by Anonymous · 0⤊ 0⤋

Q: 18x - (8x - 7) = 67

First, take the 8x + 7 out from bracket by multiply with - 1. Because - sign on front of bracket.

18x - 8x + 7 = 67

Second, add/subtract 18x - 8x.

10x + 7 = 67

Third, move + 7 to right side. Important, when move the numbers/letters to other side of = sign the sign will changes.

10x = 67 - 7

Fourth, add/subtract the numbers ... 67 - 7

10x = 60

Fifth, divide both side by 10 to figure the x.

10x / 10 = 60 / 10
x = 6

The answer is x = 6

2007-09-20 22:19:45 · answer #2 · answered by aries44 2 · 0⤊ 0⤋

Here are the steps: The first step is KEY -- note that the -7 is inside the () so when you get rid of the () you need to apply the - to both the 8x and the 7. This results in this:

18x - 8x +7 =67 (note that by getting rid of the () you can now group)

10x + 7 =67

Now subtract 7 from both sides

10x = 60

Divide by 10

x =6.

Check you answer:

18(6) - (8(6) -7) =67

108 - (48-7) =67

108 - 41 = 67

67 = 67

Hope this helps.

2007-09-20 22:16:49 · answer #3 · answered by pyz01 7 · 0⤊ 0⤋

First distribute the subtraction sign: 18x - 8x + 7 = 67
Then put all the x terms on the left side of the equation, and the others on the right: 18x - 8x = 67 - 7
Subtract: 10x = 60
Divide both sides by 10: x = 6

:)

2007-09-20 22:12:32 · answer #4 · answered by Alison 2 · 0⤊ 0⤋

18x-(8x-7)=67
You can get rid of the parentheses first
18x-8x+7=67 (you have to turn the minus sign inside the parentheses into a plus sign because if you subtract a negative number, this is the same as adding)
next, solve the equation
10x+7=67
10x=60
x=6

2007-09-20 22:13:55 · answer #5 · answered by AnnaBanana 2 · 0⤊ 0⤋

First solve bracket. U get,

18x - 8x + 7 = 67

Then u take x's to oneside and integers to the other.

10x = 67-7

x= 60/10

=6

*In case u do not know how to solve brackets,

positive*negative = negative
negative*negative = positive
positive*positive = positive.

*When u take a number to the other side, the sign changes. negative becomes positive and vice versa.

2007-09-20 22:13:51 · answer #6 · answered by Babygirl 3 · 0⤊ 0⤋

18x-8x+7=67
10x+7=67
10x+7-7=67-7
10x=60
x=6

2007-09-20 22:12:32 · answer #7 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋

18x-(8x-7)=67

18x-8x+7=67 (by removing bracketts)

10x=67-7

10x=60

x=6

therefore by substituting x value in given eqs we get 67

2007-09-20 22:17:42 · answer #8 · answered by ziya 2 · 0⤊ 0⤋

18x-8x+7=67
10x=60
x=6

2007-09-20 22:18:42 · answer #9 · answered by ptolemy862000 4 · 0⤊ 0⤋

18x-8x+7=67
10x+7=67
10x=60
x=6

2007-09-20 22:12:26 · answer #10 · answered by Vanessa 4 · 0⤊ 0⤋

solve: 18x-(8x-7)=67?

13 answers