résolvez les equations suivantes
2x+1=5- x x+3=5x+9 x/3+7=- x/6 4-5x=-3(x-8)
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résolvez les equations suivantes
2x+1=5- x x+3=5x+9 x/3+7=- x/6 4-5x=-3(x-8)
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2x+1=5-x
2x+x=5-1
3x=4
x=4/3
x+3=5x+9
x-5x=9-3
-4x=6
x=6/-4
x=-1.5
x/3+7=-x/6
2x/6+42/6=-x/6
2x+42=-x
2x+x=-42
3x=-42
x=-42/3
x=-14
4-5x=-3(x-8)
4-5x=-3*x-3*(-8)
4-5x=-3x+24
-5x+3x=24-4
-2x=20
x=20/-2
x=-10