Proszę ! Pomóżcie!! Na jutro ! Pliss :) Rozwiążcie równania: 1. x+75= -57 2. 68-x=x +96 3. 2(x+7)=3(2x-5) 4. 3-(x-4)=5 5. 3x+4=x+5 6. x-34= -35 7. 2-x=5-2x 8. 3(2x-5)=2(x+7) 9. x-(2x+1)+3=7 10. 4x-7=-2x+23
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1. x+75=-57
x= -57 - 75
x= -132
2. 68 - x = x + 96
-x-x=96-68
-2x=28 |: -2
x = -14
3. 2(x+7)=3(2x-5)
2x+14 = 6x-15
2x - 6x=-15-(-14)
-4x= -1|: -4
x= 0.25
4. 3-(x-4)=5
3-x+4=5
-x=5-3-4
-x = -2 |: -1
x= 2
5. 3x+4=x+5
3x-x=5-4
2x=1 |: 2
x= 0.5
6. x-34= -35
x= -35+34
x= -1
7. 2-x=5-2x
-x+2x=5-2
x=3
8. 3(2x-5)=2(x+7)
6x-15=2x+14
6x-2x=14+15
4x=29|: 4
x=7,25
9. x-(2x+1)+3=7
x-2x-1+3=7
-x=7+1-3
-x= 5|: -1
x= -5
10. 4x-7=-2x+23
4x+2x=23+7
6x=30 |: 6
x= 5