Wykonaj równania : a) 7+(x-2)=10b) 9+(2x-12)=9c) 4-(3x-2)=x+6d) (7+2)=2+(x+4)Jak najszybciej ;)
a) 7 + (x-2)=107 + x - 2 = 10x = 10 - 7 + 2x = 5b) 9+(2x-12)=99 + 2x - 12 = 92x = 9 - 9 + 122x = 12 /:2x = 6c) 4-(3x-2)=x+6 4 - 3x + 2 = x + 6-3x - x = 6 - 4 - 2-4x = 0 /:(-4)x = 0d)(7x+2)=2+(x+4)7x + 2 = 2 + x + 47x - x = 2 + 4 - 26x = 4 /:6x = 2/3
a) 7 + (x-2)=107 + x - 2 = 10x = 10 - 7 + 2x =5b) 9+(2x-12)=99 + 2x - 12 = 92x = 9 - 9 + 122x = 12 /:2x=6c) 4-(3x-2)=x+6 4 - 3x + 2 = x + 6-3x - x = 6 - 4 - 2-4x = 0 /:(-4)x=0d)(7x+2)=2+(x+4)7x + 2 = 2 + x + 47x - x = 2 + 4 - 26x = 4 /:6x=2/3
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a)
7 + (x-2)=10
7 + x - 2 = 10
x = 10 - 7 + 2
x = 5
b)
9+(2x-12)=9
9 + 2x - 12 = 9
2x = 9 - 9 + 12
2x = 12 /:2
x = 6
c)
4-(3x-2)=x+6
4 - 3x + 2 = x + 6
-3x - x = 6 - 4 - 2
-4x = 0 /:(-4)
x = 0
d)
(7x+2)=2+(x+4)
7x + 2 = 2 + x + 4
7x - x = 2 + 4 - 2
6x = 4 /:6
x = 2/3
a) 7 + (x-2)=10
7 + x - 2 = 10
x = 10 - 7 + 2
x =5
b) 9+(2x-12)=9
9 + 2x - 12 = 9
2x = 9 - 9 + 12
2x = 12 /:2
x=6
c) 4-(3x-2)=x+6
4 - 3x + 2 = x + 6
-3x - x = 6 - 4 - 2
-4x = 0 /:(-4)
x=0
d)(7x+2)=2+(x+4)
7x + 2 = 2 + x + 4
7x - x = 2 + 4 - 2
6x = 4 /:6
x=2/3