🟰 Equations

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Problems

x + 4 = 11 x =
x + 11 = 20 x =
x − 4 = -2 x =
x + 12 = 21 x =
x − 7 = 3 x =
x + 14 = 20 x =
x + 2 = 4 x =
x + 11 = 12 x =
x − 6 = -3 x =
x + 13 = 19 x =
x + 6 = 9 x =
x + 10 = 13 x =
x + 8 = 18 x =
x + 12 = 20 x =
x + 15 = 24 x =
x − 7 = 2 x =
x − 1 = 2 x =
x − 13 = -1 x =
x − 14 = -12 x =
x + 1 = 13 x =

Tip: Do the same on both sides until x is alone.

Answer key

1. x = 7 · 2. x = 9 · 3. x = 2 · 4. x = 9 · 5. x = 10 · 6. x = 6 · 7. x = 2 · 8. x = 1 · 9. x = 3 · 10. x = 6 · 11. x = 3 · 12. x = 3 · 13. x = 10 · 14. x = 8 · 15. x = 9 · 16. x = 9 · 17. x = 3 · 18. x = 12 · 19. x = 2 · 20. x = 12