GNP=C+I+G+(M−X)\mathrm {GNP=C+I+G+(M-X)}GNP=C+I+G+(M−X)
GNP=C+I+G+(X−M)\mathrm {GNP=C+I+G+(X-M)}GNP=C+I+G+(X−M)
GNP=C+I+G−(X−M)\mathrm {GNP=C+I+G-(X-M)}GNP=C+I+G−(X−M)
GNP=C+I+G+(X+M)\mathrm {GNP=C+I+G+(X+M)}GNP=C+I+G+(X+M)
