100 Sight Words Kindergarten Workbook Ages 4-6: A Whimsical Learn to Read & Write Adventure Act

100 Sight Words Kindergarten Workbook Ages 4-6: A Whimsical Learn to Read & Write Adventure Act

Matematika jika l15y-61=l7y+18 nilai y yang memenuhi adalah​

jika l15y-61=l7y+18 nilai y yang memenuhi adalah​

(15y -6)² = (7y+18)²

225 y² - 180y + 36 = 49y² + 252 y + 324

176 y² -  432 y - 288 = 0

11y² - 27 y - 18 = 0

(11 y - 6)(y + 3) = 0

y= 6/11 atau y = - 3

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