Question

resolva as equações
a)-3 (×-5)-2 (2×+1)=-8
b) 6 (3×+2)-8=-2
c) 9×-3 (2×+2)=15
d) 5 (3-×)-4×=15
me ajudem pf preciso para hoje

Answer 1

-3 (×-5)-2 (2×+1)=-8
-3x+15-4x-1=-8
-3x-4x=-8-15+1
-7x=-22
x=-22/-7 .(-1)
x=22/7
3,14..