1.2(x-2)-3(4x-1)=9(1-x) 2.11x+64-2x=100-9x 3.15-(8-5x)=7x+(4-3x) 4.3(x-7)-2[9-4(2-x)]=22 5.3
问题描述:
1.2(x-2)-3(4x-1)=9(1-x) 2.11x+64-2x=100-9x 3.15-(8-5x)=7x+(4-3x) 4.3(x-7)-2[9-4(2-x)]=22 5.3
答
1、2x-4–12x+3=9-9x-10x-1=9-9xx= -102、9x+64=100-9x18x=36x=23、15-8+5x=7x+4-3x7+5x=4x+4x= -34、3x-21-2(9-8+4x)=223x-21-2(1+4x)=223x-21-2-8x=22-5x-23=22-5x=45x= -9