Question

afla numarul necunoscut. (78-×)+34=2030-45

Answer 1

(78-X)+34=2030-45
(78-X)+34=1985
78-X=1985-34
78-X=1951
X=78-1951
X=  -1873
      S={-1873}

Answer 2

(78-x)+34=2030-45 (78-x)+34=1985 78-x=1985-34 78-x=1951 x=1951-78=1873 x=1873