Rozwiąż ze sprawdzeniem
a) 6x - 4 = (-9x) + 2
b) 2(x+1) = (-8) + 3
c) 3(x+8)=2 (2x-3)
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a)6x - 4 = (-9x) + 2
6x + 9x = 2 + 4
15x = 6 /:15
x = 2/5
spr:
6 * 2/5 - 4 = -9 * 2/5 + 2
12/5 - 4 = -18/5 + 2
2,4 - 4 = -3,6 + 2
-1,6 = -1,6
b) 2(x+1) = (-8) + 3
2x + 2 = -8 + 3
2x = -5 -2
2x = -7 /:2
x = -3 1/2
spr:
2(-3 1/2 + 1 ) = -8 + 3
2 * -2 1/2 = -5
-5 = -5
c) 3(x+8)=2 (2x-3)
3x + 24 = 4x - 6
3x - 4x = -6 - 24
-x = -30 /:(-1)
x = 30
spr:
3(30 + 8) = 2(2*30 - 3)
3* 38 = 2 * 57
114 = 114
a) 6x+9x =2+4
15x=6 /:15
x=0,4
b)2x + 2 = -8 +3
2x = -8 +3-2
2x=-7/ : 2
x=3,5
c)3x +24= 4x - 6
-4x+3x=-6-24
-1x=-30 / : (-1 )
x=30
:)