-9-x=10 x--7=-2
-9-x=10
-x=10+9
-x=19
x=-19
x-7=-2
x=-2+7
x=5
Pozdrawiam :)
-x=19 /÷(-1)
x--7=-2
x+7=-2
x=-2-7
x=-9
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-9-x=10
-x=10+9
-x=19
x=-19
x-7=-2
x=-2+7
x=5
Pozdrawiam :)
-9-x=10
-x=10+9
-x=19 /÷(-1)
x=-19
x--7=-2
x+7=-2
x=-2-7
x=-9