用matlab求解方程组

[a,b,c,d,e,f,w,x,y,z]=solve('-((56478346079599984258650364819929*a)/664613997892457936451903530140172288+ (14519544886715633183353711119399*b)/83076749736557242056487941267521536 +25963059299242916521936013060763/83076749736557242056487941267521536)/(2*x)=0','(203*c)/(b*c- 1) -((14519544886715633183353711119399*a)/83076749736557242056487941267521536 +(3732708167838813442759770090969*b)/10384593717069655257060992658440192 +6674625428310474602209811498853/10384593717069655257060992658440192)/(2*x)=0','(203*b)/(b*c- 1) -((11935201629770854508999677378561*c)/10384593717069655257060992658440192 +6674625428310474602209811498853/10384593717069655257060992658440192)/(2*y)=0','-((56478346079599984258650364819929*d)/664613997892457936451903530140172288+ (25963059299242916521936013060763*e)/83076749736557242056487941267521536 +(14519544886715633183353711119399*f)/83076749736557242056487941267521536 +857284766995816630300342468797/1298074214633706907132624082305024)/(2*z)=0','-((25963059299242916521936013060763*d)/83076749736557242056487941267521536+ (11935201629770854508999677378561*e)/10384593717069655257060992658440192 +(6674625428310474602209811498853*f)/10384593717069655257060992658440192 +394093254970324679820605434759/162259276829213363391578010288128)/(2*z)=0','-((14519544886715633183353711119399*d)/83076749736557242056487941267521536+ (6674625428310474602209811498853*e)/10384593717069655257060992658440192 +(3732708167838813442759770090969*f)/10384593717069655257060992658440192 +220392159457893826089358941507/162259276829213363391578010288128)/(2*z)=0','56478346079599984258650364819929/(2658455991569831745807614120560689152*w^2)- 203/(2*w)=0','((7515207653791077*a)/1152921504606846976 +(1932021782444187*b)/144115188075855872 + 3454736115793919/144115188075855872)^2/(2*x^2)- 203/(2*x)=0','((3454736115793919*c)/144115188075855872 +1932021782444187/144115188075855872)^2/(2*y^2) -203/(2*y)=0','((7515207653791077*d)/1152921504606846976 +(3454736115793919*e)/144115188075855872 + (1932021782444187*f)/144115188075855872+ 114073330570361/2251799813685248)^2/(2*z^2) - 203/(2*z)=0')

上面的方程组用matlab求解的时候为什么最后的结果出现z2,z3,是什么意思？如何求得这10个未知数的具体数值？谢谢！可以把上面的式子直接复制到matlab命令窗口。

我做学生的时候也特依赖于这类软件，结果大量的时间浪费在这类推演和数值计算上。上式显然也是个中间结果，我想还是应该对结果有个预期，才能更好的求解，也能更好理解各个变量间的依赖关系。
matlab不是万能的。

楼上说得对，我已经检查过了，我的计算可以简化成6个未知数，不用这么多式子来表示，关键还是弄清楚经济学原理。我已经计算出来我想要的结果了，谢谢！