Răspuns:
Explicație pas cu pas:
5(x-2)-7(x+3)+35=0
5x - 10 - 7x - 21 + 35 = 0
-2x + 4 = 0
2x = 4
x = 4 : 2 = 2
x = 2
5(x-2)-7(x+3)+35 = 0
5x - 10 - 7x - 21 + 35 =0
-2 x + 4 = 0
-2 x = -4
x = -4/-2
x = 4/2
Verificare:
5(2-2)-7(2+3)+35 = 0
5 * 0 - 7 * 5 + 35 = 0
0 -35 +35 = 0
0 = 0
