# algebra

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“A student scored five points more on the second quiz than he did the first. He scored eleven points lower on the third quiz than he did the first. If the average of the three quiz scores is 70, what was his score on the first quiz?”

• algebra -

Let x = the score on the first test.

x + x + 5 + x - 11 = 3(70)
3x - 6 = 210
3x = 216
x = ?

• algebra -

x=213

• algebra -

x+72

• algebra -

x=72

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