Answer:
[tex]x=2.8[/tex]
Step-by-step explanation:
[tex]7x+3=10x-5.4[/tex]
Subtract 3 from both sides:
[tex]7x+3-3=10x-5.4-3[/tex]
[tex]7x=10x-8.4[/tex]
Subtract 10x from both sides:
[tex]7x-10x=10x-8.4-10x[/tex]
[tex]-3x=-8.4[/tex]
Divide both sides by -3:
[tex]\frac{-3x}{-3}=\frac{-8.4}{-3}[/tex]
[tex]x=2.8[/tex]