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2x-27=39
7×2=5x+28
20x+37=2022
4x+27=2×+63
×+43=3×-1













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Răspuns :

Antisocialwolf1ask

2x-27=39; 2x = 39 + 27=> 66 : 2 = 33= x

7x2=5x+28= 14=5x+28= 5x= 28-14 = 14: 5 = 2.8

20x+37=2022= 20x=2022-37= 1985:20= 99.25=x

4x+27=2x+63; 4x-2x=63-27; 2x=35; 35:2= 17.5

x+43=3x-1; -1+43=3x-(-x)= 42=4x; 42: 4=10.5=x

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