Rozwiąż równania:
a) 2(x-3) + 3 (4-x) = 5
b) 3 (x-4) - 2 (2x-5) = -4
c) 2 (x + 4) - 5 ( x +3 ) = 2
d) -2 (x+3) + 4 (2x+3) = -6
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a) 2(x-3) + 3 (4-x) = 5
2x-6+12-3x=5
-x=5+6-12
-x=-1/*(-1)
x=1
b) 3 (x-4) - 2 (2x-5) = -4
3x-12-4x+10=-4
-x=-4+12-10
-x=-2/*(-1)
x=2
c) 2 (x + 4) - 5 ( x +3 ) = 2
2x+8-5x-15=2
-3x=2-8+15
-3x=9/:(-3)
x=-3
d) -2 (x+3) + 4 (2x+3) = -6
-2x-6+8x+12=-6
6x=-6+6-12
6x=-12/:6
x=-2
a) 2x-6 +12-3x=5
-x=5-6
-x=-1 /:(-1)
x=1
b) 3x-12-4x+10=-4
-x=-4+2
-x=-2 /:(-1)
x=2
c) 2x+8-5x-15=2
-3x=9 /:(-3)
x=-3
d) -2x-6 +8x+12 =-6
6x= -6-6
6x=-12 /:6
x=-2