Răspuns :

Andreistefanaid

Răspuns:

d. 10(x-3)+2=4(8x+4)

10x-30+2=32x+16

10x-28=32x+16

22x=-44

x=-2

e.2.5x+2=3(1,5x+2)

2,5x+2=4,5x+6

2x=-4

x=-2

g.(5-V7)x+10=V28

(5-V7)x+10=2V7

(5-V7)x=2V7-10

x=2(V7-5)/(5-V7)

x=2*-(5-V7)/(5-V7)=-2

h.(2x+7)/3=1+  (x+2)/2

Aducem la acelasi numitor

2(2x+7)=6+3(x+2)

4x+14=6+3x+6

4x+14=3x+12

x=-2

Explicație pas cu pas:

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