Question

sa se afle x si y daca suma lor este 35 si 2x+3y/3y=3/2​

Answer 1

Răspuns:

(2x+3y)/3y=3/2=> 2(2x+3y)= 3*3y

4x+6y=9y=> 4x=3y|:y

4x/y=3 |*1/4=> x/y=3/4=> x=3k si y=4k

3k+4k=35

7k=35=> k=5

x= 3*5=15

y= 4*5=20

Answer 2

Răspuns:

Explicație pas cu pas:

2x+3y/3y=3/2

2x+1=3/2

2x=1/2

x=1/4

x+y=35

1/4=y=35

y=35-1/4

y=34si3/4=34,75

dac vroiai altceva scriai

(2x+3y)/3y=3/2

asa , am respectat ordinea operatiilor

si atunci era

2x/3y+3y/3y=3/2

2x/3y+1=3/2

2x/3y=1`/2

4x=3y

x+4x/3=35

7x/3=35

x/3=5

x=15

y=35-15=20