The value of x is
-4x + 8 = 42
-4x = 42 -8
-4x = 34
x = -8,5
144 ways because 12 songs 12 ways 12*12
Answer:
x = 4, y = 2
Step-by-step explanation:
Start by multiplying the first equation by 2:
2x + 2y = 12 --> 4x + 4y = 24
Subtract the second from the first:
4x + 4y = 24
- 5x + 4y = 28
4x - 5x = -x
4y = 4y = 0
24 - 28 = -4
so you end with -x + 0 = -4
Solve for x to get x = 4
Plug x = 4 back into 2x + 2y = 12 to find y.
2(4) + 2y = 12
8 + 2y = 12
2y = 4
y = 2
Answer: 23
Step-by-step explanation: Because you do 34-11
Answer:
40 dimes and 21 pennies.
Step-by-step explanation: 40 dimes equal 4.00 so just add 21 pennies
