I really need help.
2007-07-24 10:27:18 · 20 answers · asked by Anonymous in Education & Reference ➔ Homework Help
Hi there,
Here is a step by step explanation of this Problem.
This kind of mathematical explanation is known as a Simple Equation.
Why is it simple? Because the value on one side of the Equation must equal the Value of the other side.
Therefore:
y + 7 = 19
where y is an unknown number that must balance the equation.
In other words, what number should you add to 7 to make it = 19.
To find the answer, you must subtract 7 from both sides of the equation, thus you get
y + 7 - 7 = 19 -7
(Whatever you do to one side of the equation, you must also do to the other side).
7 - 7 = 0
So your equation becomes:
y = 19 - 7
Therefore y = 12
So replacing y with the value 12 in the original equation, you get:
12 + 7 = 19
19 = 19
Hope this helps you.
2007-07-24 10:42:08 · answer #1 · answered by Saad S 2 · 2⤊ 1⤋
Ok so Y is the unknown number so ___ +7=19 to solve a problem like this you take the answer (19) Minus the known number (7) so 19-7=12 so Y=12
2007-07-24 10:37:03 · answer #2 · answered by Laura 2 · 0⤊ 0⤋
Math isn't my strongest subject but if this is what I think it is...
y+7=19
In all equations, you want to solve for the variable. So, you want to isolate the Y by moving the 7 to the other side. You do this by subtracting 7 from each side because what you do to one side must be done to the other.
Therefore, the answer would be y=12.
2007-07-24 10:32:38 · answer #3 · answered by Michelle 3 · 0⤊ 0⤋
1) y+7=19
2) subtract 7 from both side of the equation
y+7-7=19-7
3) y=12
2007-07-24 10:32:20 · answer #4 · answered by dob367 3 · 0⤊ 0⤋
you have to get the y alone so
1) y+7=19 subtract 7 from both
-7 = -7 sides
the 7s cancel out and then you have to subtract 7 from 19
2) 19-7=12
so y=12
2007-07-24 10:34:40 · answer #5 · answered by Anonymous · 0⤊ 0⤋
y= 12 you subtract 7 from both sides of the equation 7 -7 cancels out and 19 - 7 = 12 thus y=12 hope this helps
2007-07-24 10:31:03 · answer #6 · answered by Gator Girl 5 · 0⤊ 1⤋
y+7=9
put the y on its own on one side, remember when you put something on the other side of the = it changes from positive to negative, and vice versa
y= 9-7
now do the 9-7
y=2
very easy just break it down. A tip i have is this:
treat this: 2 + 4 = 4 - x
as these: positive 2 positive 4 = positive 4 negative x
EDIT: oops lol its 19 not 9 but you get the idea
2007-07-24 10:32:07 · answer #7 · answered by ertyu 3 · 0⤊ 0⤋
y+7=19
First you minus 7, so you can make the equation more balanced and isolate y. Since you are finding 'y'.
So it would be
y+7=19
-7 -7
________
+7-7= 0
So then you have left y=12 because 19-7 = 12
yay! =) get it?
2007-07-24 10:31:45 · answer #8 · answered by Anonymous · 0⤊ 0⤋
y+7=19
then subract 7 from each side
y+7-7 = 19-7
Which zeroes out the 7 on the left side of the equation
y+0 = 12
y = 12
2007-07-24 10:31:26 · answer #9 · answered by sam l 3 · 0⤊ 1⤋
Y (corresponds to 12) + 7=19.
You just have to substract from the result the other number you have in the equation and voila!
2007-07-24 10:31:27 · answer #10 · answered by MCM 3 · 0⤊ 1⤋