Решите уравнения: 1) 165,64-(a-12,5)=160,54 2)278,74-(6,5-b)=276,84. заранее

1)

165,64 - (a - 12.5) = 160,54

165.64-а+12.5=160.54

176.14-а=160.54

а=176.14-160.54

а=17.6

165.64-(17.6-12.5)=160.54

2)

278.74 - (6,5 - b) = 276,84

278.74-6.5+б=276.84

272.24+б=276.84

б=276.84-272.24

б=4.6

278.74-(6.5-4.6)=276.84