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1 ) 3 ( 5x + 3 ) = 7 ( x + 5 ) - 3 ( 2 - x )
2 ) - 6 ( 5 + 2x ) = 30
1]
3[5x+3]=7[x+5]-3[2-x]
15x+9=7x+35-6+3x
15x-7x-3x=29-9
5x=20
x=20:5
x=4
2]
-6(5+2x)=30 /:(-6)
5+2x=-5
2x=-5-5
2x=-10
x=-10:2
x=-5
1)
15x-7x-3x=35-6-9
5x=20/:5
2)
-30-12x=30
-12x=30+30
-12x=60
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1]
3[5x+3]=7[x+5]-3[2-x]
15x+9=7x+35-6+3x
15x-7x-3x=29-9
5x=20
x=20:5
x=4
2]
-6(5+2x)=30 /:(-6)
5+2x=-5
2x=-5-5
2x=-10
x=-10:2
x=-5
1)
15x+9=7x+35-6+3x
15x-7x-3x=35-6-9
5x=20/:5
x=4
2)
-30-12x=30
-12x=30+30
-12x=60
x=-5