[tex]a)\\\\X+3K = L \ \ |-3K\\\\X = L-3K\\\\\\E+X = 9P \ \ |-E\\\\X = 9P-E\\\\\\4G+X = H \ \ |-4G\\\\X = H-4G\\\\\\P+X = 8R \ \ |-P\\\\X = 8R-P[/tex]
[tex]b)\\\\X - 7C = D \ \ |+7C\\\\X = D+7C\\\\\\X - 5M = N \ \ |+5M\\\\X = N+5M\\\\\\X - 3P = R \ \ |+3P\\\\X = R + 3P\\\\\\X - 4A = 9B \ \ |+4A\\\\X = 9B+4A[/tex]
[tex]c)\\\\7MX = N \ \ /:7M\\\\X = \frac{N}{7M}\\\\\\3PX = R \ \ /:3P\\\\X = \frac{R}{3P}\\\\\\PX = 2R \ \ /:P\\\\X = \frac{2R}{P}\\\\\\3KX = 2L \ \ /:3K\\\\X = \frac{2L}{3K}[/tex]
