resoudre les équations suivantes: 7+5×...=4 4×...+3=-7 -5+3×...=1 aidez moi svp

[tex]7+5*...=4 <=> 5*... = 4-7 <=> ... = \frac{-3}{5} =-0,6[/tex]
[tex]4*...+3 = -7 <=> 4*... = -7 -3 <=> ... = \frac{-10}{4} = -2,5[/tex]
[tex]-5+3*... =1 <=> 3*... = 1+5 <=> ... = \frac{6}{3} = 2[/tex]

5x....=-3
x=-3/5

4*...=-10
...=-5/2

3*...=6
....= 2