800(145+x)=378
116000 + 800x = 378
800x = 378 – 116000
800x = -115622
x = -144.5275
(x+320)-130=470
x + 320 – 130 = 470
x = 470 + 130 – 320
x = 280
(679+х)=1000:277
679+х=3,61010830325
х=3,61010830325-679
х=-675,389891697
800(145+x)=378
116000 + 800x = 378
800x = 378 – 116000
800x = -115622
x = -144.5275
(x+320)-130=470
x + 320 – 130 = 470
x = 470 + 130 – 320
x = 280
(679+х)=1000:277
679+х=3,61010830325
х=3,61010830325-679
х=-675,389891697