1. x + 28 = 135 2. x - 54 = 73 3. 7x = 343 4. x : 8 = 18 5. 15 + x = 164 6. x - 95 = 125 7. 9x = 441 8. x : 5 = 37 9. x + 209 = 500 10. x - 187 = 64

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1. x + 28 = 135 2. x - 54 = 73 3. 7x = 343 4. x : 8 = 18 5. 15 + x = 164 6. x - 95 = 125 7. 9x = 441 8. x : 5 = 37 9. x + 209 = 500 10. x - 187 = 64

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1. $x + 28 = 135 \Rightarrow x = 135 - 28 \Rightarrow x = 107$ 2. $x - 54 = 73 \Rightarrow x = 73 + 54 \Rightarrow x = 127$ 3. $7x = 343 \Rightarrow x = 343 : 7 \Rightarrow x = 49$ 4. $x : 8 = 18 \Rightarrow x = 18 \cdot 8 \Rightarrow x = 144$ 5. $15 + x = 164 \Rightarrow x = 164 - 15 \Rightarrow x = 149$ 6. $x - 95 = 125 \Rightarrow x = 125 + 95 \Rightarrow x = 220$ 7. $9x = 441 \Rightarrow x = 441 : 9 \Rightarrow x = 49$ 8. $x : 5 = 37 \Rightarrow x = 37 \cdot 5 \Rightarrow x = 185$ 9. $x + 209 = 500 \Rightarrow x = 500 - 209 \Rightarrow x = 291$ 10. $x - 187 = 64 \Rightarrow x = 64 + 187 \Rightarrow x = 251$

1. x + 28 = 135 2. x - 54 = 73 3. 7x = 343 4. x : 8 = 18 5. 15 + x = 164 6. x - 95 = 125 7. 9x = 441 8. x : 5 = 37 9. x + 209 = 500 10. x - 187 = 64

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