The sum of this number plus 2.38 is a multiplier of 5

Let this number be x, then
5X+3.2＝38.2
X＝7

The sum of 15 and 2 times of a number is half of 38. What is the number? Set up equations and solve them

This number is X
15+2x=38x1/2
15+2x=19
2x=19-15
2x=4
x=2

3.5 times of a number is more than 1.2 times of this number

Let this number be x.3.5x-1.2x = 46, & nbsp; & nbsp; & nbsp; & nbsp; 2.3x = 46, 2.3x △ 2.3 = 46 △ 2.3, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X = 20; a: this number is 20

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