35(X-2)-15(7.5-6)=22X-63-21(3X-4)
问题描述:
35(X-2)-15(7.5-6)=22X-63-21(3X-4)
答
35(X-2)-15(7.5-6)=22X-63-21(3X-4)
35x-70-22.5=22x-63-63x+84
76x=176.5
x=353/152
答
35(X-2)-15(7.5-6)=22X-63-21(3X-4)
35X-70-45/2=22X-63-63X+84
35X+41X=21+70+45/2
76X=91+45/2
X=227/152