Rozwiąż równania mają być też obliczenia z góry dzieki za pomoc oto one:
2(x+5)-3=4x+8
4x+9=-5x+81
3(2x-7)=4(2x-7)
6x+4=7x+3,5
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2x + 10 = 4x + 8
2x - 4x = -10 + 8
-2x = -2/-2
x = 1
4x + 5x = -9 + 81
9x = 72/9
x = 8
6x - 21 = 8x -28
6x - 8x = 21 - 28
-2x = -7/-2
x = 3,5
6x - 7x = -4 + 3,5
-x = 0,5
x = -0,5