Question

resolver a equação y-3 + y+1 = y-1
4 6 12
no conjunto IR

Answer 1

y-3/4 + y+1/6 = y-1 /12 ===> *(12) mmc
3(y-3) + 2(y+1) = y-1
3y-9 + 2y+2 = y-1
5y -7 = y-1
5y -y = -1 +7
4y = 6
y = 6/4 = 3/2 ✓