Question

Mim ajudem. Por favor

Answer 1

A- 8x-9=7x-2
8x-7x=-2+9
+x=+7
x= 7
b- 9x+5=7x+25
9x-7x= 25-5
+2x=20
×= 20/2
×=10

c- 4x+8=1x +26
4×-×=26-8
3×=18
×=18/3
×= 6
d- 10×-9= -5×+22
10×+5×=22+9
15×=31
×=31/15
×=2,06