Question

dau și coroana și inima , tot ce vreti !​

Answer 1

Răspuns:

Explicație pas cu pas:

a) 4x+8-3x = -17

x+8 = -17

x = -17 - 8

x = - 25

b) 6x+30-3x = 21

3x+30 = 21

3x = 21-30

3x = 9

x = 9/3 = 3

c) 11-3x-15 = 2x+1

4-3x-2x = 1

-5x = 1-4

-5x = -3

x = -3/-5

d) 32-7x+35 = 3x-3

-7x+67 = 3x-3

-7x-3x = -3-67

-10x = -70

x = -70/-10 = 7

e) 4x-24+2x = 18

6x = 18+24

6x = 42

x = 42/6 = 7

f) 4x+28-15 = 3x

4x+13 = 3x

4x-3x = -13

x = -13

g) 14-8x-24 = 2x

-10-8x = 2x

-8x-2x = 10

-10x = 10

x = 10/-10 = -1

h) 6x+18-4 = 2x-42

6x+14 = 2x-42

6x-2x = -42-14

4x = -56

x = -56/4 = -14

i) 6x-24+44 = 8x + 4+2x

6x+20 = 10x+4

6x-10x = 4-20

-4x = -16

x = -16/-4 = 4

j) 10x - 15-4x = 3x-24+63

6x-15 = 3x+39

6x-3x = 39+15

3x = 54

x = 54/3 = 18

Answer 2

$\it a)\ \ 4(x+2)-3x=-17 \Rightarrow 4x+8-3x=-17 \Rightarrow \\ \\ \Rightarrow 4x-3x=-17-8 \Rightarrow x=-25\\ \\ \\ c)\ \ 11-3(x+5)=2x+1 \Rightarrow 11-3x-15=2x+1 \Rightarrow 11-15-1=2x+3x \Rightarrow \\ \\ \Rightarrow -5=5x\Big|_{:5} \Rightarrow x=-1$

$\it g)\ \ 14-8(x+3)=2x \Rightarrow 14-8x-24=2x-8x-10=2x \Rightarrow -8x-2x=10 \Rightarrow \\ \\ \Rightarrow -10x=10\Big|_{:(-10)} \Rightarrow x=-1\\ \\ \\ r)\ \ x-15+3(x+1)=5(x-2)+11 \Rightarrow x-15+3x+3=5x-10+11 \Rightarrow \\ \\ \Rightarrow x+3x-5x=11-10+15-3 \Rightarrow -x=13\Big|_{\cdot(-1)} \Rightarrow x=-13$