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a fost răspuns

(295 + a) : 4 = 425
(2400 - a) : 7 =302
(5000-a):6 = 124

Răspuns :

(295 + a) : 4 = 425 
295+x/4=425
295+x=1700
x=1700-295
x=1405

(2400 - a) : 7 =302
2400-x/7=302
2400-x=2114
-x=2114-2400
-x=-286
x=286


(5000-a):6 = 124
5000-x/6=124
5000-x=744
-x=744-5000
-x=-4256
x=4256
Cocirmariadenis
(295 + a) : 4 = 425
295 + a = 425 × 4 
295 + a = 1 700
a = 1 700 - 295
a = 1 405

(2400 - a) : 7 =302
2 400 - a = 302 × 7
2 400 - a = 2 114
a = 2 400 - 2 114
a = 286

(5000-a):6 = 124
5 000 - a = 124 × 6
5 000 - a = 744
a = 5 000 - 744
a = 4 256