Answer:
−7y+8
Step-by-step explanation:
1. Simplify each term.
−4y+8−3y
2. Subtract 3y from −4y.
−7y+8
Hope this helps :D
Answer:
c = -2.4 or -12/5
Step-by-step explanation:
5c - 3 = -15
First we need to add 3 to both sides so,
5c - 3 + 3 = -15 + 3
so we can now solve it
5c = -12 then we divide 5 by both sides
c = -12 / 5
c = -2.4
The fraction form is -12/5
The decimal form is -2.4
Hope this helps!!
Answer:
Step-by-step explanation:
We want to find the inverse of
To find the inverse matrix, augment it with the identity matrix and perform row operations trying to make the identity matrix to the left. Then to the right will be inverse matrix.
So, augment the matrix with identity matrix:
- Subtract row 1 multiplied by 4 from row 2
- Add row 1 multiplied by 4 to row 3
- Subtract row 2 multiplied by 2 from row 3
- Add row 3 multiplied by 2 to row 1
- Subtract row 3 multiplied by 11 from row 2
As can be seen, we have obtained the identity matrix to the left. So, we are done.
Answer:
x= 4 and y= 11
Step-by-step explanation:
The problem to solve is:
y = 2x + 3 (equation 1)
y = 3x - 1 (equation 2)
Since y = 3x - 1 Solve x from equalution 1
3x - 1 = 2x + 3
3x - 2x = 3 + 1
x = 4
Since x is 4, solve for y
y = 3x - 1
y = 3(4) - 1
y = 12 -1
y = 11
x =4 and y =7
I think it a rational number .i am
not sure so