Question

a)4×+1=×+7

b)3×+3=12

c)×+5=2×+4​

Answer 1

a)

4x + 1= x + 7

4x - x= 7 - 1

3x= 6

x= 6/3

x= 2

_______________

b)

3x + 3= 12

3x= 12 - 3

3x= 9

x= 9/3

x= 3

_______________

c)

x + 5= 2x + 4

x - 2x= 4 - 5

- 1x= - 1>> .(-1)

1x= 1

x= 1/1

x= 1

Answer 2

a)

$4x - x = 7 - 1 \\ 3x = 6 \\ x = \frac{6}{3} \\ x = 2$

b)

$3x = 12 - 3 \\ 3x = 9 \\ x = \frac{9}{3} \\ x = 3$

c)

$x - 2x = 4 - 5 \\ - x = - 1$

ai multiplica tudo por -1

$x = 1$

espero ter ajudado