Răspuns:
Explicație pas cu pas:
a×14+244=1000
a x 14 = 1000 - 244
a x 14 = 756
a = 756 : 14
a = 54
[(a÷9)×7+(102÷2)]-49=58
[(a÷9)×7+(102÷2)] = 58 + 49
[(a÷9)×7+(102÷2)] = 107
[(a÷9)×7+51 ] = 107
(a÷9)×7 = 107 - 51
(a÷9)×7 = 56
(a÷9) = 56 : 7
a÷9 = 8
a = 8 x 9
a = 72
8×a+573÷3-93=210
8×a+573÷3 = 210 + 93
8×a+573÷3 = 303
8 x a + 191 = 303
8 x a = 303 - 191
8 x a = 112
a = 112 : 8
a = 14
a×10÷3=4500
a x 10 = 4500 x 3
a x 10 = 13500
a = 13500 : 10
a = 1350
1+1+1+1+1+1×1×1×1×1=1×a
1×1×1×1×1 = 1
1+1+1+1+1+1 = 1 x a
6 = 1 x a
a = 6 : 1
a = 6
14+14×2=7×2+2×a Acesta nu are necunoscuta . Am presupus ca ar fi ultima .
14+14×2=7×2+2×a
14 + 28 = 14 + 2 x a
42 = 14 + 2 x a
42 - 14 = 2 x a
28 = 2 x a
a = 28 : 2
a = 14
