Question

puteti va rog sa ma ajutati???​

Answer 1

a) nu se intelege bine unde e egal

b) -3(3x+1)+14 = 3(7x-3)-10

-9x-3+14 = 21x-9-10

-9x+11 = 21x-19

-9x-21x = -19-11

-30x = -30

x = 1

c) 14+2*[3-2(x-3)]:2 = 37

14+2*[3-2x+6] = 37*2

14+2*[-2x+9] = 74

2*[-2x+9] = 74-14

2*[-2x+9] = 60

-2x+9 = 60:2

-2x+9 = 30

-2x = 30-9

-2x = 21

x = -21/2

d) -4-{6-[-3-3+(-3-x)-7]-9} = 1

6-[-6-3-x-7]-9 = -4-1

6-[-16-x] - 9 = -5

6-[-16-x] = -5+9

6-[-16-x] = 4

-16-x = 6-4

-16-x = 2

x = -16-2

x = -18

e) 5*1+2(x+1) = -7(x+3)+3(3x-5)+43

5+2x+2 = -7x-21+9x-15+43

2x+7 = 2x+7  

0 = 0 → Adevarat