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EASY MATH QUESTIONS PLEASE HELP

EASY MATH QUESTIONS PLEASE HELP-example-1
EASY MATH QUESTIONS PLEASE HELP-example-1
EASY MATH QUESTIONS PLEASE HELP-example-2

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4 votes

Ali scored 9 Goals while Hani scored 4

Let the goals scored by Ali = x

Let the goals scored by Hani = y

So, if Ali scored 5 more goals than Hani then it can be written as

x= y+5 ....(1)

They scored 13 goals together so,

x+y=13 ......(2)

Substituting the value of x in equation 2

x + y+13

y+5+y=13

5 + 2y = 13

2y = 13-5

2y = 8

y = 8/2

y = 4

x = 4+5 = 9

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= (x + y)x - (x + y)y [Distributive property]

= x(x + y) - y(x + y) [Commutative property]

= xx + xy - yx - yy [Associative property]

= xx + xy - xy - yy [Commutative property]

= xx + (xy - xy) - yy [Associative property]

= x² - y² [Subtraction]

User Vargr
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