Answer:
23x-16=14-17x
primeiro adicione 16 no primeiro membro e no segundo
23x-16+16=14-17x+16
depois adicione 17x no dois membros
23x+17x=14-17x+17x+16
e o resultado fica
40x=30
Step-by-step explanation:
1. Let the shorter piece be x in. long
the longer piece will be x + 13 in. long
and the two pieces add up to be 47 in., so
x + ( x + 13 ) = 47
2x = 47 - 13
2x = 34
x = 17
the longer piece is x + 13 in. long,, or 17 + 13 = 30 in. long
2. number of dimes: x
number of quarters: y
x + y = 27....(1)
10x + 25y = 405...(2)
(1)*10: 10x + 10y = 270....(3)
(2) - (3):15y = 135
y = 9
plug y = 9 into (1), you will find that x = 18
so 18 dimes, 9 quarters
Answer:
-6
Step-by-step explanation:
-1/2x + 3 > 5 /*-2
x-6<-10
x<-4
x=-6
I THINK YOU FORGOT TO POST THE COMPLETE Q.
Answer:
38 = 1 x 38 or 2 x 19. Factors of 38: 1, 2, 19, 38. Prime factorization: 38 = 2 x 19
