prosze na teraz plisss
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(ODPOWIEĆ)
×+75=57
x = 57 - 75
x = -18
1 2/3 +y=2 3/4
y = 2 3/4 - 1 2/3
y = 2 9/12 - 1 8/12 = 1 1/12
t-34=-35
t = -35 + 34
t = 1
3-×=-2
-x = -2 - 3
-x = -5
x = 5
5y=13
y = 13/5
y = 2 3/5
1/7×=-2
x = 2 * 7 = 14
b/3=45
b = 45 * 3
b = 135
7a+7=35
7a = 35 - 7
7a = 28
a = 4
2-2×=5
-2x = 5 - 2
-2x = 3
x = -3/2 = - 1 1/2
a) x+75=57
x=-18
b) 1⅔+y=2¾
y=1 1/12
c) t-34=-35
t=1
d) 3-x=-2
x=5
e) 5y=13
y=2 ⅗
f) ⅐x=-2
x=14
g) b/3=45
b=135
h) 7a+7=35
a=4
i) 2-2x=5
x=1 ½