Tìm x biết
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Bài 3: Tìm x biết:
1) \( 70 - 5(x - 3) = 45 \)
2) \( 95 - 5(x + 2) = 5 \)
3) \( 4x + 18 : 2 = 13 \)
4) \( 145 - 2(x - 30) = 45 \)
5) \( 48 - 3(x + 5) = 24 \)
6) \( x - 48 : 16 = 37.2 \)
7) \( 3(x + 10) - 15 = 15 \)
8) \( (x + 6) \cdot (15 - 6) = 81 \)
9) \( 50(8 - x) + 17 = 117 \)
10) \( 7(x + 4) : 2 = 28 \)
Bài 3: Tìm x biết:
1) \( 70 - 5(x - 3) = 45 \)
2) \( 95 - 5(x + 2) = 5 \)
3) \( 4x + 18 : 2 = 13 \)
4) \( 145 - 2(x - 30) = 45 \)
5) \( 48 - 3(x + 5) = 24 \)
6) \( x - 48 : 16 = 37.2 \)
7) \( 3(x + 10) - 15 = 15 \)
8) \( (x + 6) \cdot (15 - 6) = 81 \)
9) \( 50(8 - x) + 17 = 117 \)
10) \( 7(x + 4) : 2 = 28 \)