1)(34+x)83=42
раскроем скобки
2822+83x = 42
83x+2780 = 0
83x = -2780
x = -2780/83
х=-33,4939759036
2)45-(x-16)=28
45 – x + 16 = 28
– x = 28 – 16 – 45
-x = -33
x = 33
1)(34+x)83=42
раскроем скобки
2822+83x = 42
83x+2780 = 0
83x = -2780
x = -2780/83
х=-33,4939759036
2)45-(x-16)=28
45 – x + 16 = 28
– x = 28 – 16 – 45
-x = -33
x = 33