5(x-9)=15-6(x-1) 2x-19=1
问题描述:
5(x-9)=15-6(x-1) 2x-19=1
答
5(x-9)=15-6(x-1)
5x-45=15-6x+6
5x+6x=21+45
11x=66
x=6
2x-19=1
2x=1+19
2x=20
x=10