The following expression are direct proportion. Find the values of x and y
a. 40 : (x + 3) = 5 : 2
b. 7 : 3 = 35 : (y + 5 )
plis jawan kalo bisa pake cara no asal THX THX THX
a. 40 : (x + 3) = 5 : 2
b. 7 : 3 = 35 : (y + 5 )
plis jawan kalo bisa pake cara no asal THX THX THX
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a)
40 x 2 = 5 x (X+3)
80 = 5X + 5 x 3
80 = 5X + 15
80 - 15 = 5X
65 = 5X
13 = X
b)
7 x (y+5) = 3 x 35
7y + 35 = 105
7y = 105 - 35
7y = 70
y = 10