Question

Resuelve
4(×-1 )+( ×+3)=9(×-1 ) + 2×10
a)1. c) 1
1

b) 9. d) 9
11
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Answer 1

4(x-1 )+( ×+3)=9(×-1 ) + 2×10

4x - 4 + x + 3  = 9x -9 + 20

4x + x -4 +3 = 9x -9 + 20

5x - 1 = 9x + 11

-11 -1 = 9x - 5x

- 12 = 4x

   -3 = x