Kneeling for the new space-time mathematics in the sixth grade winter vacation (Zhejiang Education Publishing House) to find the value answer of X, those who only say what they do will surely succeed! ! ! ! I'm not good at math. Three eighths =0.375 0.375/(5%/0.60)=4.5

X+7=7/4.2 times 9= 15 X= 15-7=8.

One and two fifths = seven fifths 7: seven fifths =5 X=5 times three quarters times 6 = 45 of two.

It's too much trouble to write answers to the last few questions. X=76/2 1 X=0.2 X= 1/60。