Question

1. Resolva as equações

A) X+50=40

B) 30-20+2×=10

C) 3×-10+13=-2×+28

D) 20×-30=40+30-20

E) 5×+45-89=-90+41

F) 10×-20=50+40

G) 20-80+2×=16

H) 19+2×-13=10-20

I) 10×-12+10=18-20

J) 13×-23-45=-7×+12

Answer 1

1. Resolva as equações

A) X+50=40 x=40-50=-10

B) 30-20+2×=10 2x=10-30+20 2x=0

C) 3×-10+13=-2×+28 5x=28-13+10=5x=25 x=25/5=5

D) 20×-30=40+30-20 20x=50+30 20x=80 x=80/20=4

E) 5×+45-89=-90+41 5x=-49+44 5x=-5 x=-5/5=-1

F) 10×-20=50+40 10x=90+20 10x=110 x=110/10=11

G) 20-80+2×=16 2x=16+60 2x=76 x=76/2=38

H) 19+2×-13=10-20 2x=-10-8 2x=-18 x=-18/2=-9

I) 10×-12+10=18-20 10x=-2+2 10x=0

J) 13×-23-45=-7×+12 13x+7x=-68+12 20x=-56 x=-56/20 =-2,8 ou corta por 4= 14/5

Answer 2

Resposta:

deixa minha resposta pfvr preciso de ponto obg

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