81x-342=76(x-2)
问题描述:
81x-342=76(x-2)
答
81x-342=76(x-2)
81x-342=76x-152,
81x-342+342=76x-152+342,
81x=76x+190
81x-76x=76x+190-76x
5x=190
5x÷5=190÷5
x=38.