Question

Afla nr necunoscut (375-289)+d=1000. e-(288+165)=357. (688+97)-a=486

Answer 1

(375-289)+d=1000=>86+d=1000=>d=1000 - 86=>d=914
e-(288+165)=357=>e-453=357=>e=357+453=>e=810
(688+97)-a=486=>785-a=486=>a=785-486=>a=299
Cam atât

Answer 2

a)(375-289)+d=1000
186+d=1000
d=1000-186
d=814
b)e-(288+165)=357
e-453=357
e=453+357
e=810
c)(688+97)-a=486
785-a=486
a=785-486
a=299