a, X:0.25+X x 11=24
X x 4 + X x 11 = 24
X x (11 + 4) = 24
X x 15 = 24
X = 24 : 15
X = 1,6
b, X x 8.01-X: 100=38
X x 8,01 - X x 0,01 = 38
X x (8,01 - 0,01) = 38
X x 8 = 38
X = 38 : 8
X = 4,75`
a, X:0.25+X x 11=24
X x 4 + X x 11 = 24
X x (11 + 4) = 24
X x 15 = 24
X = 24 : 15
X = 1,6
b, X x 8.01-X: 100=38
X x 8,01 - X x 0,01 = 38
X x (8,01 - 0,01) = 38
X x 8 = 38
X = 38 : 8
X = 4,75
a) X : 0,25 + X x 11 = 24
X x 4 + X x 11 = 24
X x ( 11 + 4 ) = 24
X x 15 = 24
X = 24 : 15
X = 1,6
b, X x 8 , 01 - X : 100 = 38
X x 8,01 - X x 0,01 = 38
X x ( 8,01 - 0,01 ) = 38
X x 8 = 38
X = 38 : 8
X = 4,75
a, X:0.25+X x 11=24
X x 4 + X x 11 = 24
X x (11 + 4) = 24
X x 15 = 24
X = 24 : 15
X = 1,6
b, X x 8.01-X: 100=38
X x 8,01 - X x 0,01 = 38
X x (8,01 - 0,01) = 38
X x 8 = 38
X = 38 : 8
X = 4,75`