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bonjour
3 x + 4 = 5 x - 6
3 x - 5 x = - 6 - 4
- 2 x = - 10
x = 5
2 x - 18 = 50
2 x = 50 + 18
2 x = 68
x = 34
- 30 y - 42 = 30 + 9 y
- 30 y - 9 y = 30 + 42
- 39 y = 72
y = - 72/39
y = - 24 / 13
bonjour
3 x + 4 = 5 x - 6
3 x - 5 x = - 6 - 4
- 2 x = - 10
x = 5
2 x - 18 = 50
2 x = 50 + 18
2 x = 68
x = 34
- 30 y - 42 = 30 + 9 y
- 30 y - 9 y = 30 + 42
- 39 y = 72
y = - 72/39
y = - 24 / 13