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Step-by-step explanation:

1. x + 5.3 = 10.1

combine the like terms

x = 10.1 - 5.3

x = 4.8

2. x - 4.2 = 12.9

combine the like terms

x = 12.9 + 4.2

x = 17.1

3. 1.5x = 60

divide both sides by 1.5

x = 60/1.5

x = 40

4. x/1.3 = 1.8

cross multiply

1.3 goes to 1.8 and x stands alone

x = 2.34

Hope this helps

c 1 hour

step-by-step explanation:

m = 2e

m = 2 so 2 = 2e

1 = e