Question

A
5.(3-x)-3.(7-x)=4-(x-13)
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Answer 1

5.(3-x)-3.(7-x)=4-(x-13)
15 - 5x -21 + 3x = 4 - x + 13
- 5x +3x +x = -15 + 21 +4 + 13
- x = 23
x = - 23

Answer 2

5.(3-x)-3.(7-x)=4-(x-13)

15 - 5x - 21 + 3x = 4 - x + 13

15- 21 - 4 -13 = - x - 3x + 5x

- 23 = x

x = - 23