Question

2.x+4=10

5.T-10=25

4.Yx7= -1

6+2.Z=8

Answer 1

2x+4=10                      6+2Z=8
2x=10-4                       2Z=8-6
2x=8                             2Z=2
x=8/2                              Z=1
x=4

5T-10=25                   4Yx7=-1 -> nao entendi
5T=25+10              
5T=35
T=35/5
T=7

Answer 2

a)

2.x + 4 = 10
2x = 10 - 4
2x = 6
x = 6/2
x = 3

**********************
b)

5.T-10=25
5t = 25 + 10
5t = 35
t = 35/5
t = 7

******************************
c)

4.Y + 7= -1
4y = - 1 - 7
4y = - 8
y = - 8/4
y = - 2

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d)

6 +2.Z = 8
2z = 8 - 6
2z = 2
z = 2/2
z = 1