Question

16)a,b,c va rog e URGENT!!!!!!!!​

Answer 1

Răspuns:

a) 4x-2y+6x-12=-6

6x-4y+4-5y=-8

10x-2y=6

6x-9y=-12

x = 6+2y/10

36+12y/10-9y=-12

36+12y-90y=-120

-78y=-156 rezulta y = 156/78=2

x = 1

b) 3x-y-2=-2x-4y

4x+8=6-3y+3

5x+3y=2

4x+3y=1

3y=2-5x

4x+2-5x=1 rezulta -x=-1 rezulta x = 1 iar y = -1

c) xradical2-3y+3=-1

2xradical2-radical2=2y-x

x=3y-4/radical2

6yradical2-4radical2-2radical2=4y-3yradical2-4radical2

9yradical2-4y=2radical2

y = 2radical2/(9radical2-4)

x= 3radical2/(9-2radical2)

Explicație pas cu pas: