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خطی مساواتیں اور عدم مساوات

نویں جماعت · ریاضی · 6 سوالات

نام: ____________________   تاریخ: ____________

  1. Solve 3x + 5 = 20.

    • A x = 15
    • B x = 5
    • C x = 25/3
    • D x = 8

  2. Solve 2x - 7 = 9.

    • A x = 1
    • B x = 2
    • C x = 16
    • D x = 8

  3. Solve x/4 = 7.

    • A x = 28
    • B x = 3
    • C x = 11
    • D x = 1.75

  4. Solve the inequality 2x + 1 > 7.

    • A x < 3
    • B x > 4
    • C x > 3
    • D x > 6

  5. When both sides of an inequality are multiplied by a negative number, the inequality sign:

    • A Disappears
    • B Becomes equal
    • C Stays the same
    • D Reverses

  6. The sum of two consecutive numbers is 41. What is the smaller number?

    • A 22
    • B 21
    • C 19
    • D 20

جوابی کلید

1. B, 2. D, 3. A, 4. C, 5. D, 6. D

  1. 3x = 15, so x = 5.

  2. 2x = 16, so x = 8.

  3. Multiply both sides by 4: x = 28.

  4. 2x > 6, so x > 3.

  5. Multiplying or dividing by a negative number reverses the inequality sign.

  6. x + (x + 1) = 41 gives x = 20.