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You are here: Examples10.com > Science > Mathematics > Addition equations Post by natttt
Posted on 2011-02-01 14:24:26
Example of equation:
50 + x = 120
50 + x - 50 = 120 - 50
0 + x = 70
x = 70

Example of equation 2:
500 + x = 1200
500 + x - 500 = 1200 - 500
0 + x = 700
x = 700
Check the answer by substituting (700) for x in the original equation. The answer is correct if the expressions on each side of the equals sign have the same value.
500 + 700 = 1200

Example of equation 3:
5000 + x = 12000
5000 + x - 5000 = 12000 - 5000
0 + x = 7000
x = 7000
Check the answer by substituting (7000) for x in the original equation. The answer is correct if the expressions on each side of the equals sign have the same value.
5000 + 7000 = 12000

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