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[tex] \frac{7}{4} = \frac{x}{2} [/tex]
[tex] \frac{x + 3}{12} = \frac{4}{3} [/tex]
7x=x+25
0,4x-6=0,6x-9
[tex]0.6(x + 1 \times \frac{2}{3} ) = - 1.2[/tex]
[tex] \frac{7}{4} = \frac{x}{2} [/tex]
[tex] \frac{x + 3}{12} = \frac{4}{3} [/tex]
7x=x+25
0,4x-6=0,6x-9
[tex]0.6(x + 1 \times \frac{2}{3} ) = - 1.2[/tex]
Answers & Comments
Verified answer
1) 4*x=7*2
x= 7/2 (или 3,5)
2) 3*(x+3)= 4*12
x+3= 4*4
x= 16-3
x= 11
3) 0,4x-0,6x= -9+6
-0,2x= -3
x= 3:2/10
x=3:1/5
x=3*5
x=15
4) 0,6(x+1*2/3)=-1,2
x+2/3= -2
x=-2-2/3
x= -8/3