Bonjour,
1) 1/3x = 4
2) x = 45 - 30
3) 1/2x - 4 = 6
4) 1/4 * 2/3x = 1
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Bonjour,
1) 1/3x = 4
2) x = 45 - 30
3) 1/2x - 4 = 6
4) 1/4 * 2/3x = 1
45 -30 = x
x÷2 -4 =6
x÷6 = 1 (car x ÷3 × 2÷ 4 = 1)