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  • Utilizator Brainly
2014-11-14T18:56:26+02:00

139+3x-2^30:2^28=198

139+3x-2^2=198

139+3x-4=198

135+3x=198   /-135

3x=63   

x=21

2014-11-14T19:03:29+02:00
139+3X-2^30/2^28=198
139+3X-2^2=198
139+3X-4=198
3X-4=198-139=59
3X=59+4
3X=63
X=21