Answer:
4:1
Step-by-step explanation:
a — b = 3
then a= 3+b
a + b = 5
3+b +b = 5
3+2b=5
2b=5-3
2b=2
b=1
a= 3+b
a=3+1=4
a:b= 4:1
Answer:
p=2
Step-by-step explanation:
10 – (8p + 3) = 9(2p - 5)
(rearrange and distribute) -8+7=18−45
(Subtract and combine) −26=−52
(Divide and find p) p=2
He was not supposed to simplify. He could have multiplied straight across and got 12/63 and he would simplify that which would be 4/21 im thinking
Answer:

Step-by-step explanation:
We can add the two equations to eliminate
and solve for
.



Now, we can find for
by using substitution:
(given)


Hope this helps :)