Question

Tim y

 a,( 372 + 300 ) : ( y x 3 ) = 8

b,21 : ( y + 3 ) x 4 + 88 = 100

 

Answer 1

a, ( 372 + 300 ) : ( y x 3 ) = 8

672 : ( y x 3 ) = 8

y x 3 = 672 : 8

y x 3 = 84

y = 84 : 3

y = 28

b, 21 : ( y + 3 ) x 4 + 88 = 100

21 : ( y + 3 ) x 4 = 100 - 88 

21 : ( y+3)x4 = 12

21 : ( y + 3 ) = 12 : 4

21 : ( y + 3 ) = 3

y + 3 = 21 : 3

y + 3 = 7

y = 7 - 3

y = 4

Answer 2

a) (372+300): (y x 3) =8

=> 672:8 = y x 3

=> 84 = y x 3

=> 84/3 = y

=> y = 28

b) 21:(y+3)x4 + 88 =100

=> 21: ( y+3) x 4=100-88

=>21 : (y+3) x 4 =12

=>21 : ( y+3 )=12/4

=>21 : (y+3)=3

=> 21/3=y+3

=>7=y+3

=>y=7-3

=>y=4