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课程 6 · 年级 5–7
Equations: find X
📖 课程
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🎯 测验——选择翻译
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✅ 本课已完成
An equation is a balance: left and right are the same. x + 5 = 12 → take 5 from both sides → x = 7.
- ●x + 3 = 10 → x = 7
- ●2x = 16 → x = 8
- ●x − 4 = 9 → x = 13