Question

Решить уравнение(3.9+х)-1цел3/4=5.25

Answer 1

3,9+x-1.75=5.25

x=5.25-3.9+1.75

x=3.1

Answer 2

(3,9+х)-1цел3/4=5,25

(3,9+х)-1,75=5,25

3,9+х=5,25+1,75

3,9+х=7

х=7-3,9

х=3,1