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ecuatii si sisteme de ecuatii

Authored by Loredana Constandache

Mathematics

7th - 8th Grade

Used 61+ times

ecuatii si sisteme de ecuatii
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9 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Soluția ecuației: 4x-2=10 este

x=3

x=-3

x=2

x=8

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Solutia ecuației: -5x+5=-30 este

x=5

x=7

x=-7

x=6

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Soluția ecuației: 7-3x==-23-8x este:

6

165\frac{16}{5}

7

-6

4.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

Dintre ecuațiile următoare, echivalente sunt:

3x-8=10

9-2x=-21-7x

2(x+1)=10-x

-4x+2=-22

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Suma soluțiilor ecuației: |x+3|=5 este

5

-6

-8

2

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Fie sistemul de ecuații (S): x+y=3 si

x -y=-1.

Soluția sistemului este:

(1;2)

(-1;2)

(2;1)

(-2;1)

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Sie sistemul de ecuații (S):  xy2=x3\frac{x-y}{2}=\frac{x}{3}  și  x+2y2=5\frac{x+2y}{2}=5  .Soluția sistemului este:

(-6;-2)

(2;-6)

(-2;-6)

(-2;6)

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