Question

va rog dati mie  citeva ecuatii pentru clasa 6 va rog mult

Answer 1

2x{76x9+5x[9+6x4+(5+6x3)x5]-78}-1=x

2x[684+5x(9+24+23x5)-78]-1=x

2x(684+5x148-78)-1

2x(684+740-78)-1

2x1346-1

2692-1

2691

Answer 2

3x+86=260
3x=260-86
3x=174
x=174:3
x=58
V: 3*58+86=260

17+(-2x)=11
-2x=11-17
-2x=-6
x=-6:(-2)
x=3
V: 17+(-2*3)=11

-10x+4=-96
-10x=-96-4
-10x=-100
x=-100:(-10)
x=10
V: -10*10+4=-96