Question

Afla numerele necunoscute:
a:8:5=5
(a×4+51)-203=20
a:2+43-(200-56):6=35

Answer 1

a : 8 : 5 = 5
a : 8 = 5 * 5
a = 25 * 8
a = 200
(a * 4 + 51) - 203 = 20
(a * 4 + 51) = 20 + 203
4a = 223 - 51
a = 172 : 4
a = 43
a : 2 + 43 - (200 - 56) : 6 = 35
a : 2 + 43 - 144 = 35 * 6 
a : 2 = 210 + 144 - 43
a = 311 : 2
a = 155 si 1/2

Answer 2

a:8=25=>a=200
ax4+51=223=>ax4=172=>a=43
a:2+43-144:6=35=>a:2+43-24=35=>a:2=35-19=>a:2=16=>a=32