Equation algebraogram

Solve the equation:

oco + ivo = cita

How much has the task of solutions?

Correct result:

n =  18

Solution:

s1=919+189=1108 s2=919+199=1118 s3=919+289=1208 s4=919+299=1218 s5=919+389=1308 s6=919+399=1318 s7=919+489=1408 s8=919+499=1418 s9=919+589=1508 s10=919+599=1518 s11=919+689=1608 s12=919+699=1618 s13=919+789=1708 s14=919+799=1718 s15=919+889=1808 s16=919+899=1818 s17=919+989=1908 s18=919+999=1918  n=18s_{1}=919 + 189=1108 \ \\ s_{2}=919 + 199=1118 \ \\ s_{3}=919 + 289=1208 \ \\ s_{4}=919 + 299=1218 \ \\ s_{5}=919 + 389=1308 \ \\ s_{6}=919 + 399=1318 \ \\ s_{7}=919 + 489=1408 \ \\ s_{8}=919 + 499=1418 \ \\ s_{9}=919 + 589=1508 \ \\ s_{10}=919 + 599=1518 \ \\ s_{11}=919 + 689=1608 \ \\ s_{12}=919 + 699=1618 \ \\ s_{13}=919 + 789=1708 \ \\ s_{14}=919 + 799=1718 \ \\ s_{15}=919 + 889=1808 \ \\ s_{16}=919 + 899=1818 \ \\ s_{17}=919 + 989=1908 \ \\ s_{18}=919 + 999=1918 \ \\ \ \\ n=18



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