(1/3+1/2)*х=3,75 , (3/5-0,25)*x=4,9

Question

(1/3+1/2)*х=3,75 , (3/5-0,25)*x=4,9

Answer 1

(1/3+1/2)*X=3.75
1/3x+1/2x=3.75
2/6x+3/6x=3.75
5/6x=3.75
x=3.75:5/6
x=3 75/100*6/5
x=375/100*6/5
x=75/50*3/1
x=225/50
x=4,5

Comments

(3/5-0.25)*x=4.9 3/5x-0.25x=4.9 0.6x-0.25x=4.9 0.35x=4.9 x=4.9:0.35 x=14

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спасибо

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пожалуйста.удачной учёбы.