Question

Raspunde cu DA sau NU a ) ecuatia -2x + 10 = 0 are solutia 5 b) ecuatia x - 23 = -4 are solutia 18 c) ecuatia 2x *(-3) = - 12 are solutia 2 d) ecuatia x impartit (-6) = 7 are solutia 13

Answer 1

Răspuns:

a) -2x+10=0

-2x=-10

x=10:2

x=5 (A)

b)x-23=-4

x=-4+23

x=19 (F)

c)-6x=-12

x=2 (A)

d) x:(-6)=7

x=7·(-6)

x=-42 (F)

Answer 2

Salutare,

a)-2x+10=0 (A)

Rezolvare:

-2x=-10

x=10:2

x=5

b)x-23=-4 (F)

Rezolvare:

x=-4+23

x=19

c)-6x=-12 (A)

Rezolvare:

x=12÷-6

x=2

d)x÷(-6)=7 (F)

Rezolvare:

x=7×(-6)

x=-42

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