Question

Решите уравнения: (а = 109) *30=6510
d-(240*13)=1260
n+1240=1060*20

Answer 1

d-(240*13)=1260;
d-3120=1260;
d=3120+1260;
d=4380
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n+1240=1060*20
n+1240=21200
n=21200-1240
n=19960

Answer 2

Я напутала (а+109)*30=6510