Question

A)4×-3-×+8=11
B)6(×-2)=12
C)9+2(5×-4)=21
D)10×+4(3-2×)-6=8
Alguém mi ajuda por favor,com conta

Answer 1

A)
4×-3-×+8=11
4x - x -  3 + 8 = 11
3x + 5 =11
3x = 11 - 5
3x = 6
x = 6/3
x = 2


B)
6(×-2)=12
6x - 12 = 12
6x = 12 + 12
6x = 24
x = 24/6
x = 4

C)
9+2(5×-4)=21
9 + 10x - 8 = 21
9 - 8 + 10x = 21
1 + 10x = 21
10x = 21 - 1
10x = 20
x = 20/10
x = 2

D)
10×+4(3-2×)-6=8
10x + 12 - 8x - 6 = 8
10x - 8x + 12 - 6 = 8
10x - 8x + 6 = 8
2x + 6 = 8
2x = 8 - 6
2x = 2
x = 2/2
x = 1