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a fost răspuns

A) 5x+9+3(2x-1)=2x+24
B) 3(x+2)+2(x-4)=4x+1
C) 7x+8+2(5-x)=6+2(x+3)
D) 5(x-2)+4x-3=6x+11
E) 4x+7+5(x+3)=2x+1

Răspuns :

Moisescuraluca
5x+9+3(2x-1)=2x+24
5x+9+3x-3=3x+24
5x+3x-3x=24-9+3
5x=18
x=[tex] \frac{18}{5} [/tex]

3(x+2)+2(x-4)=4x+1
3x+6+2x-8=4x+1
3x+2x-4x=1-6+8
x=3

7x+8+2(5-x)=6+2(x+3)
7x+8+10-2x=6+2x+6
7x-2x-2x=6+6-8-10
3x=-6
x=-2

5(x-2)+4x-3=6x+11
5x-10+4x-3=6x+11
5x-+4x-6x=11+10+3
3x=24
x=8

4x+7+5(x+3)=2x+1
4x+7+5x+15=2x+1
4x-5x-2x=1-7-15
-3x=-21
x=-21:(-3)
x=7

Baftaa!!

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