51002-(14112÷28+x)×63=224
(14112÷28+x)×63=51002-224=50778 Impartim cu 63
14112÷28+x=806
504+x=806
x=302
51002 - (14112 : 28 + x) · 63 = 224
51002 - (504 + x) · 63 = 224
(504 + x) · 63 = 51002 - 224 = 50778
504 + x = 50778 : 63 = 806
x = 806 - 504 = 302.
/rfd