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Sixth Class maths · O.5 · Equations and Inequalities

Write an inequality x > c or x < c from a condition

Get x by itself. Undo any number added or subtracted first, then divide by the number in front of x. Flip the sign if you divide by a negative number.

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  1. Solve: 4x + 9 > 29. Write the answer as x < a number or x > a number.

    Answer: Sign (< or >): >; Number: 5

  2. Solve: −4x + 11 < 39. Write the answer as x < a number or x > a number.

    Answer: Sign (< or >): >; Number: -7

  3. Solve: −6x − 2 > −20. Write the answer as x < a number or x > a number.

    Answer: Sign (< or >): <; Number: 3

Tip: Get x by itself. Undo any number added or subtracted first, then divide by the number in front of x. Flip the sign if you divide by a negative number.

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