how to calculate the value of this number line 100-97+94-88+85.....+4-1? the answer is 51 ,I don't know how to get it?please help me
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Step-by-step explanation:
100+94-88+85+....+4-1=51
...=51+1-4-85+88-94-100
...=52-89+88-194
...=140-284
...=-144
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