Question

equação do primeiro grau -100×+100=-99+10

Answer 1

-100x=-100-99+10
-100×=-189. ×(-1)
100×=189
×=189÷100
×=1,89

Answer 2

-100x+100=-99+10
-100x=-99+10-100
-100x=-189
x=-189/-100
x=189/100