Question

Реши уравнения. у-165=620+173

а:15=54:18. 800-х=870-610. у-420=600-56. 55•х=820-710. 300-х=42•2.

Даю 100 баллов

Answer 1

y-165 = 620+173

y-165 = 793

y = 793+165 = 958

a:15 = 54:18

a:15 = 3

a = 3*15 = 45

800-x = 870-610

800-x = 260

x = 800-260 = 540

y-420 = 600-56

y-420 = 544

y = 544+420 = 964

55•x = 820-710

55•x = 110

x = 110:55 = 2

300-x = 42•2

300-x = 84

x = 300-84 = 216

Answer 2

у-165=620+173

у-165=793

у=793+165

у=958

а:15=54:18

а:15=3

а=3•15

а=45

800-х=870-610

800-х=260

х=800-260

х=540

у-420=600-56

у-420=544

у=420+544

у=964

55•х=820-710

55•х=110

х=110:55

х=2

300-х=42•2

300-х=84

х=300-84

х=216