Решите уравнения:
а) 5x + 6x = 2211
б) 23x + x - 10 = 38
в) 1457 / ( 7 + 8x) = 47
г) 1.5x - 0.2x + 1.4x = 291.6
A) 5x + 6x = 2211
11x = 2211
x = 2211/11
x = 201
б) 23x + x - 10 = 38
24x = 38 + 10
24x = 48
x = 48/24
x = 2
в) 1457 / ( 7 + 8x) = 47
1457 / ( 7 + 8x) = 47 / 1
47 ( 7 + 8x) = 1457
329 + 376x = 1457
376x = 1457 - 329
376x = 1128
x = 1128 / 376
x = 3
г) 1,5x - 0,2x + 1,4x = 291,6
1,3x + 1,4x = 291,6
2,7x = 291,6
x = 291,6 ÷ 2,7
x = 108
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