Решите уравнения, пожалуйста!
1) 6х – 20 = 8х – 8;
2) 9 – 4х = 3х – 40;
3) 4(х + 3) = х + 6;
4) 4 – 6(х + 2) = 3 – 5х .
1) 6х – 20 = 8х – 8;
2) 9 – 4х = 3х – 40;
3) 4(х + 3) = х + 6;
4) 4 – 6(х + 2) = 3 – 5х .
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Answers & Comments
1)6x-20=8x-8
6x-8x=-8+20
-2x=12
x=-6
2)9-4x=3x-40
-4x-3x=-40-9
-7x=-49
x=7
3)4(x+3)=3-5x
4x+12=3-5x
4x+5x=3-12
9x=-9
x=-1
4)4-6(x+2)=3-5x
4-6x-12=3-5x
-6x+5x=3-4+12
-x=11
x=-11