Question

Solutia ecuatiei (7-9)*x-1=3

Answer 1

(7-9)*x=3+1

(7-9)*x=4

-2*x=4

X=4/-2

X=-2

Verificare:

(7-9)*x=3+1

-2*-2=4

4=4

Answer 2

Răspuns:

x=-2

Explicație pas cu pas:

(7-9)*x-1=3

-2*x-1=3

-2x-1=3

-2x=3+1

-2x=4

x=4:(-2)

x=-2