Question

Gente porfavor e pra amanha quero a conta completa com a prova real.
7x-8=x+40
x+2×-4509=0
70×=49000
x=129342732-2x
9x+4-1=4+82+x
32×-4=450+x-4+x

Answer 1

7x - 8 = x + 40
7x - x  = 40 + 8
6x = 48
x = 48/6 = 8 

x+2x - 4509 = 0
3x= 4509
x= 4509/3 = 1503

70x = 49000
x= 49000/70 = 700

x= 129342732 - 2x
3x= 129342732
x= 129342732/3 = 431141

9x +4 -1= 4+82 +x 
9x - x= 82 + 1
8x= 83
x=83/8 = 10,375

32x - 4=450+x-4+x
32x - 2x = 450
30x= 450
x=450/30
x=150