Question

Aflati x din ecualtiile ... a) 5x+20-(100:2-48)x=41
b) 308x-[(400-394)x-2x)×2=300

Answer 1

Răspuns:

a)x=3

b)x=1

Explicație pas cu pas:

a)5x+20-(100:2-48)x=41

5x+20-2*x=41

5x+20-2x=41

5x-2x=41-20

3x=21

x=21:7

x=3

b)308x-[(400-394)x-2x]*2=300

308x-(6x-2x)x2=300

308x-4x*2=300

308x-8x=300

300x=300

x=300:300

x=1