Answer:
p : 3.4
Step-by-step explanation:
2.1-2*p=-4.7
2.1+4.7=2*p
2*p=6.8
p=6.8/2= 3.4
Answer:
5y = 5
Step-by-step explanation:
When the second equation is multiplied by -2, it becomes ...
-2(x -2y) = -2(-1)
-2x +4y = 2
Adding this to the first equation gives ...
(2x +y) +(-2x +4y) = (3) +(2)
2x +y -2x +4y = 5 . . . . . . . . . eliminate parentheses
5y = 5 . . . . . . . . . . . . . . . . . . .collect terms
Answer:
air is nice
Step-by-step explanation:
heheh
Answer:
a=2
b=5
Step-by-step explanation:
5a=2b
a=2/5b
2(2/5b) -3b= -11
4/5b-3b =-11
-2.2b=-11
b=5
5a=2*5=10
a=2
Answer:
72.00
Step-by-step explanation:
umm cant really explain