rownania i nierówno I UKŁADY RÓWNAŃ STOPNIA PIERWSZEGO
a) 7x+6+4x=9-2x+7+81
b) 8x-13+101=22x+18
c)4y-18+7y=1+9y-18
a)
7x+6+4x=9-2x+7+81
7x+4x+2x=9-6+7+81
13x=91 |:13
x=7
b)
8x-13+101=22x+18
8x-22x=18+13-101
-14x=-70 |:(-14)
x=5
c)
4y-18+7y=1+9y-18
4y+7y-9y=1-18+18
2y=1 |:2
y=0,5
a. 7x+4x+2x=9+7+81-6
13x=91 /:13
b. 8x-22x=18+13-101
-14x=-70 /: -14
c. 4y+7y-9y=1-18+18
2y=1 / :2
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a)
7x+6+4x=9-2x+7+81
7x+4x+2x=9-6+7+81
13x=91 |:13
x=7
b)
8x-13+101=22x+18
8x-22x=18+13-101
-14x=-70 |:(-14)
x=5
c)
4y-18+7y=1+9y-18
4y+7y-9y=1-18+18
2y=1 |:2
y=0,5
a. 7x+4x+2x=9+7+81-6
13x=91 /:13
x=7
b. 8x-22x=18+13-101
-14x=-70 /: -14
x=5
c. 4y+7y-9y=1-18+18
2y=1 / :2
y=0,5