7.8 Subtract a number 1.5 times, and the difference is 5.7. Find this number.

Solution: Let this number be x, then

7.8- 1.5X=5.7

1.5X=7.8-5.7

1.5X=2. 1

X= 1.4

3.5 times a number is 0.3 less than two 0.29. Find this number.

Solution: Let this number be x, then

2*0.29-3.5X=0.3

0.58-3.5X=0.3

3.5X=0.58-0.3

3.5X=0.28

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