Solve the following proportion:
X + 5 7
X – 4 10

.cross multiple.
[tex]10x + 50 = 7x - 28[/tex]
[tex]10x - 7x = 28 - 50[/tex]
[tex]3x = - 22[/tex]
[tex]x = - 22 \div 3[/tex]
[tex]x = - 7.333[/tex]