Algebra 1 - bobpursley, Monday, January 3, 2011 at 4:13pm
didn't I just give you the three steps? What did you not understand about those steps?
Algebra 1 - Erudita, Monday, January 3, 2011 at 4:34pm
subtract x from each side, then subtract 9 from each side. Finally, divide both sides by 6
I' do apologize, It's just that I don't understand the operation. of the subtraction of x on both sides and so forth. If it's not too much asking, can you please show me? Thank you much.
7x+9>1x+3=
Subtract x from each side:
6x + 9 > 3
Subtract 9 from each side:
6x > -6
Divide by 6
x > -1
Thank you so much Ms. Sue. I really do appreciate all you do for us students who struggle with numbers. Thank you also for your patience. Thanks, again!
You're very welcome, Erudita. And thank you for the compliment. As you may know, I'm not a math teacher, so have struggled with math myself. :-)
Of course, I'd be happy to explain the steps to you!
Step 1: Subtract x from each side
When we subtract x from each side of the equation, we are trying to isolate the variable on one side of the equation.
Let's say the equation is: x + 9 = 15
To isolate x, we can subtract x from both sides:
(x + 9) - x = 15 - x
The x on the left side cancels out, leaving us with:
9 = 15 - x
Step 2: Subtract 9 from each side
Next, we want to isolate the variable even further by getting rid of the constant (9) on the same side of the equation.
Continuing from the previous equation:
9 - 9 = (15 - x) - 9
When we subtract 9 from 9, we get 0 on the left side:
0 = 15 - 9 - x
Simplifying further:
0 = 6 - x
Step 3: Divide both sides by 6
Now, we are left with the variable (x) on one side of the equation. To solve for x, we divide both sides by the coefficient (6) in front of x.
Continuing from the previous equation:
0/6 = (6 - x)/6
The left side simplifies to 0:
0 = (6 - x)/6
And that's it! You've successfully completed the three steps. Each step aimed to isolate the variable on one side of the equation in order to solve for it.