Matemática
FlavioFernandes
2

Resolva as questões. a) 4x-3-x+8=11 b) 6.(x-2)=12 c) 9+2.(5x-4)=21 d) 10x+4.(3-2x)-6=8 e) 3.(5+3x)+5.(-x-1)=22 f) 2.(9x-4)-7+(6-5x).3=18

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(1) Respostas
gabrielulianado

a)4x-3-x+8=11 4x-x+8-3=11 3x+5=11 3x= 11-5 3x=6 x=6/3 x= 2 b)6.(x-2)=12 6x-12=12 6x=12+12 6x=24 x=24/6 x=4 c)9+2.(5x-4)=21 9+10x-8=21 10x=21+8-9 10x=20 x=20/10 x=2 d)10x+4.(3-2x)-6=8 10x+12-8x-6=8 10x-8x+12-6=8 2x+6=8 2x=8-6 2x=2 x=2/2 x=1 e)3.(5+3x)+5.(-x-1)=22 15+9x-5x-5=22 9x-5x+15-5=22 4x+10=22 4x=22-10 4x=2 x=4/2 x=2 a letra f não deu certo portanto não resolvi

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