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ax + b = c

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·½³Ì1: 2x + 3 = 7

·½³Ì2: 4x - 5 = 3

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2(2x + 3) = 2(7)

4x + 6 = 14

4x - 5 = 3

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4x + 6 = 14

4x - 5 = 3

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5(4x + 6) = 5(14)

6(4x - 5) = 6(3)

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20x + 30 = 70

24x - 30 = 18

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x = 2

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·½³Ì1: 2(2) + 3 = 7

·½³Ì2: 4(2) - 5 = 3

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7 = 7

3 = 3

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