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can som1 plz solve dis problem?

2007-01-08 14:57:22 · 6 answers · asked by sallu_rock 2 in Science & Mathematics Mathematics

6 answers

9x + 2.3 = -10.3
9x = -10.3 - 2.3
9x = -12.6
x = -12.6/9
x = -1.4

2007-01-08 15:01:45 · answer #1 · answered by computerguy103 6 · 1 0

You want to get x by itself.

First, let's move 2.3 over to the right side by adding -2.3. Make sure to do it to both sides to keep the equation balanced.

9x + 2.3 - 2.3 = -10.3 - 2.3
9x + 0 = -12.6
9x = -12.6

Now, remove the 9 from the left by multiplying by (1/9). Make sure to do it to both sides to keep the equation balanced.

(1/9)*9x = (1/9)*(-12.6)
1*x = -12.6/9
x = -1.4

So your answer is x = -1.4.

2007-01-08 23:02:24 · answer #2 · answered by alsh 3 · 0 0

To answer this question,

1. you need to know that the objective is to find the unknown which can be represented from a to z. (in this case, it is x)

2. you need to know the effect when you move from right to left between the equal sign.

When moving from left to right of the = sign
Additional become Subtraction
Subtraction become Additional
Multiplication become Division
Division become Multiplication

The same apply when you move from right to left of the = sign

You need to memorize the above in order to solve question this nature. Once , it is in your head, solving become easy :

9x+2.3 = -10.3 (move +2.3 to right to become -2.3)
9x = -10.3-2.3
9x = -2.6 (move multiplication of 9 over to right to become division)
x = -2.6/9
x = -1.4

2007-01-08 23:16:40 · answer #3 · answered by cls22cls 2 · 0 0

hi salman
9x + 2.3 = -10.3
9x = -10.3 - 2.3
9x = -12.6
x = -12.6/9
x = -1.4

2007-01-09 08:40:15 · answer #4 · answered by girish sahare 2 · 0 0

9x= -12.6

x= -12.6/9=(-63/5)/(9/1)= -7/5 or -1.4

2007-01-08 23:02:24 · answer #5 · answered by Spearfish 5 · 0 0

X=-1.4

2007-01-08 23:06:59 · answer #6 · answered by Mohammad K 1 · 0 0

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