Question

$7x =28$
$5 x - 2x= 4 + 5$
$4x=48$
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Answer 1

7x = 28

x = 28 / 7

x = 4

5x - 2x = 4 + 5

3x = 9

x = 9 / 3

x = 3

4x = 28

x = 28 /4

x = 7

Answer 2

7x = 28

7x÷7=28÷7

x = 4

5x= -2x= 4+5

3x= 4+5

3x=9

x=3

4x=48

4x÷4=48÷4

x=12