Rozwiąż równania
a) 97 = 2x - 5
b) 43 = 7 + 9x
c)17 = 11 - 12x
d) 3 ⅔ = ½x - ⅓
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a)
2x-5=97
2x=97+5
2x=102/:2
x=51
b)
7+9x=43
9x=43-7
9x=36/:9
x=4
c)
11-12x=17
-12x=17-11
-12x=6/:(-12)
x=-1/2
d)
1/3x-1/3=3 2/3
1/3x=3 2/3+1/3
1/3x=4/*3
x=12
a) 97=2x-5
2x=97+5
2x=102
x=102 : 2
x= 51
b) 43=7+9x
9x=43-7
9x=36
x=36 : 9
x=4
c)17=11-12x
12x=17-11
x=6 : 12
x= 1/2
d) 3 ⅔ = ½x - ⅓
½x=3 ⅔ + ⅓
½x=4
x= 4 : ½
x= 4 * 2
x=8