298935
809674
178754
918087
$\sqrt{5x-6}$ - $\sqrt{x+1}$ = 1
649722
798429
2*x=4
23-7x=3x+8
18t + 9 = 9(_ + _ )
2a + b = -4 sendo A= 2 E B = -4
6
d×7≡1mod120