Answer:
A=464
B=93
Step-by-step explanation:
A+B=557
A-B=371
Solving the two equations simultaneously gives A=464 and B=93
Answer:
25
Step-by-step explanation:
3a=30... equation 1
2a+2b=30... equation2
equation 2 => a+b=15 ... equation 3
equation 1 => a = 10 ... equation 4
equation 4 & equation 3 => b = 5
5^2 = 25
Answer:y=5
Step-by-step explanation:
5(y+1)=30
Divide both sides by 5
5(y+1)/5=30/5
We get y+1=6
Subtract 1 from both sides
y+1-1=6-1
We get y=5
The answer is 8.25... Sorry if I get it wrong.
Answer:
(3,1)
Step-by-step explanation:
Since both equations are equal to y, we can set them equal to each other
y = 3x-8
y = 4-x
3x-8 = 4-x
Add x to each side
3x+x-8 = 4-x+x
4x-8 = 4
Add 8 to each side
4x-8+8 = 4+8
4x = 12
Divide each side by 4
4x/4 =12/4
x=3
Now we can find y
y = 4-x
y = 4-3 =1
