12 x 12 = 144
20 x 12 = 240
=384
ANSWER: 384
6x-6=7x-8
-6=x-8
2=x
Now that we know the value of x we plug in the value to solve CT .
CT =12
Answer:
4) add the equations to eliminate x
Step-by-step explanation:
After adding the equations then you can use the value you found for y to substitute back into one of the equations in order to find x
X=20
3(x-1)-8=4(1+x)+5
1. Distribute
3x-3-8= 4+4x+5
2. Combine like terms
3x-11=4x+9
3. Add 11 or subtract 9 to both sides
3x-11+11=4x+9+11
or
3x-11-9=4x+9-9
3x=4x+20
or
3x-20=4x
If you did the first step then you subtract 4x from both sides
3x-4x=4x+20-4x
-x=20
Then you would divide by a negative 1 because there is an imagery 1 in front of the x.
-x/-1=20/-1
x=-20
If you did the second way then you would subtract 3x from both sides
3x-20-3x=4x-3x
-20=x
And you get the same answer for both ways
For this case we must find the solution of the following equation:
Applying distributive property on the right side of the equation we have:
Subtracting 7x from both sides of the equation:
Subtracting 20 from both sides of the equation:
Different signs are subtracted and the major sign is placed.
Dividing between -2 on both sides of the equation:
Thus, the solution of the equation is
Answer:
