Rozwązywanie równań:
a) 2a+12=-3(4a-6)=
b) (12x-6):3=5(3x-2)=
c) 1\2x-4=3\10x-6=
d) -3(2a-4)=4(-3+10)=
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a) 2a + 12 = -3(4a-6)
2a + 12 = -12a + 18
14a = 6 / ÷ 14
a = 3/7
b) (12x-6):3 = 5(3x-2)
(12x-6):3 = 15x - 10
3(4x - 2 )÷3 = 15x - 10
4x -2 = 15x - 10
-11x = -8 /÷ (-11)
x = 8/11
c) ½x - 4 = 3\10x - 6
½x - 3/10x = -6 + 4
5/10x - 3/10x = -2
2/10x = -2 /÷2/10
x = -10
d) -3(2a-4)=4(-3+10)
-6a + 12 = -12 + 40
-6a = -12 + 40 -12
-6a = 16 / ÷ (-6)
a = -16/6 = -8/3
a) 2a+12=-12a+18
2a+12a=18-12
14a=6
a= ⁶/₁₄= ³/₇
b) 4x-2=15x-10
4x-15x=-10+2
-11x=-8
11x=8
x=⁸/₁₁
c) ⁵/₁₀x-³/₁₀x=-6+4
¹/₅x=-2
x=-10
d)-6a+12=-12+40
-6a=40-24
-6a=16
6a=-16
a=-⁸/₃= -2²/₃
NIechcąco dodałam sb ocene "2". :D