Question

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$5 \times - 6 - 3( \times + 4) = 3( \times - 5)7$
3x[2•|2x-5|-15]-12=9​

Answer 1

Răspuns:

5x-6-3(x+4)=(3x-5)7

5x-6-3x-12=21x-35

2x-18=21x-35

2x-21x=-35+18

-19x=-17

x = 17/19

3×[2×|2x-5|-15]-12=9

6×|2x-5|-45-12=9

6×|2x-5|-57=9

6×|2x-5|=9+57

6×|2x-5|=66

|2x-5|=66:6

|2x-5|=11

2x-5=11=>2x=16=>x=8

2x-5=-11=>2x=-6=>x=-3

x1=8 ; x2=-3