Dajuan2x
19.08.2019 •
Mathematics
Anne is 2 years older than betty.last year ann was 2 times as old as betty.how old is ann?
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Ответ:
Ответ:
X = -4
Step-by-step explanation:
90 - 5x + 62 -2x = 180
152 - 7x = 180
-7x = 28
x = -4
Check your answer by pluging in the vaule of x
90 - 5(-4)
90 + 20 = 110
62 - 2(-4)
62 + 8 = 70
110 + 70 = 180
Checks out.