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OpenStudy (anonymous):
Simplify the expression twenty-one minus seven times two plus nine. Show your work. Then, show how the solution is affected if addition and subtraction are not applied from left to right.
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OpenStudy (anonymous):
@Jadeishere
OpenStudy (jadeishere):
21 - 7 * 2 + 9 PEMDAS 7 * 2 = 14 21 - 14 + 9 21 - 14 = 7 7 + 9 16
OpenStudy (anonymous):
21-14+9 7+9 16
OpenStudy (anonymous):
it's 21-23 not 23-21
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