Answer:
2987.
Step-by-step explanation:
25(23) + 67(36) = 575 + 2412 = 2987.
CD=50 DVD=40
5C+7D=530
C=D+10
C-D=10
Solve the system
5C+7D=530
5C-5D=50 (multiply by 5)
Subtract
12D=480
D=40
Substitute in any of the equations
C-D=10
C-40=10
C=50
I think it would be
3cx + cx = 7
Add the similar variables
4cx = 7
Divide by 4 on both sides since you isolated the variable
Cx= 1.75
Answer:
x = -6 ; y = -1
Step-by-step explanation:
2 x - y = - 11 .........equ No 1
- 2 x - y = 13 .........equ No 2
Adding equ No. 1 and equ No. 2
- 2 y = 2
∴ y = - 1
substituting y = -1 in equ no 1
2 x - ( -1) = -11
2 x + 1 = - 11
2 x = -11 - 1
2 x = -12
∴ x = -6
x = -6 ; y = -1
The answer is (3,6) Can you please mark me as brainliest
