Annela's answer to Harini's Primary 6 Maths Algebra Singapore question.
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There are total of 60 people
18 fewer adults than children
Let number of children be x
Let number of adults be x-18
x + x-18 = 60
2x - 18=60
2x=60+18
2x=78
x=78÷2
=39
Number of adults=x-18
= 39-18
= 21
18 fewer adults than children
Let number of children be x
Let number of adults be x-18
x + x-18 = 60
2x - 18=60
2x=60+18
2x=78
x=78÷2
=39
Number of adults=x-18
= 39-18
= 21
Date Posted:
4 years ago
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