Решите пж №1421 (2 и 4)

Question

Решите пж №1421 (2 и 4)

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Answer 1

2) 3x - 1 = 0,5x + 4
3x - 0,5x = 4 + 1
2,5x = 5
x = 5 : 2,5
x = 2

4) (3x - 5)/2 = x + 3
3x - 5 = 2x + 6
3x - 2x = 6 + 5
x = 11