Question

sa se dea multimea nr reale ecuatile a. -8+6x=0
b. 7-x=14
c. 2x-1 supra 3=2
d. 2•(x-1)-5•(3x+5)=-2x-5

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Answer 1

Răspuns:

a) - 8+6x=0

6x=0-8

6x= - 8| : 6

x= - 1,3

b) 7-x=14

x= 14-7

x=7

c) 2x-1 = 2

3

x=7

2

d) 2×(x-1)-5×(3x+5)=-2x-5

=2x-2-15x-25=-2x-5

=-13x-27=-2x-5

=-13+2x=-5+27

=-11x=22

x=-2

Sper ca te am ajutat!