1) x+30=− 9x.

2) − x−2+3(x−3)=2(4−x)−3.

3) 8−5(2x−3)=13−6x.

4) 5·(r-7)=3·(r-4)-27

5) -4·(3-5z)=18z-7

6) При каком значении x значения выражений 3x−2 и 2x+4 равны?

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