Question

Rezolvați ecuatiile pct:f,g,h,i,j,k l,m,n​

Answer 1

Răspuns:

f) 1-x+4-x+9-x=50

14-3x=50

3x=50-14

3x=36

X=36:3

X=12

g)5x-5*3+11=2x+2

5x-15+11=2x+2

5x-2x=2+15-11

3x=17-11

3x=6

X=6:3

X=3

h)11*1-11x+7x=15

11-4x=15

4x=15-11

4x=4

X=4:4

X=1

i) 6x+6*2-8=3x+14

6x+12-8=3x+14

6x+4=3x+14

6x-3x=14-4

3x=10

X=10/3

j) 7x-9=2*3x+2*1

7x-9=6x+2

7x-6x=2+9

1x=11

X=11:1

X=11

k)5x-5*0,4=19-2x

5x-2=19-2x

5x+2x=19+2

7x=21

X=21:7

X=3

l)23x-41=7x+7*3+2

23x-41=7x+21+2

23x-41=7x+23

23x-7x=23+41

16x=64

X=64:16

X=4

M)44-13x=100-2*8x-2*5

44-13x=100-16x-10

44-13x=90-16x

-13x+16x=90-44

3x=46

X=46/3

n)

3x-3*2+2x-2*3=4x-12

3x-6+2x-6=4x-12

1x-0=4x-12

1x-4x=-12

-3x=-12

X=-12/3

X=4