Question

determine a raiz das seguintes equações do 1 grau com uma incógnita
a) x/2+1 =x/5+1/4
b) x/4+x/3=x-100
c) 2x/3+5x/6=1/2
d) x/2+ x/5- x/10 = 1- 4x/5
e) 7x/20-2x/5 +x/4 +3x/20 =1/10

Answer 1

Resposta:

a) 10x+20=4x+5

10x-4x=-20+5

x=-15/6

b) x/4+x/3=x-100

m.m.c

3x+4x=12x-1200

-5x=-1200

x=-1200/-5

c) 2x/3+5x/6=1/2

m.m.c

8x+10x=6

x=6/18

d) x/5=21-x/2

m.m.c

2x+5x=210

x=210/7

e)4/5+3x/5=1/10+x

m.m.c

16+15x=2+20x

-5x=-14

x=-15/-14

Explicação passo-a-passo:

me ajuda a crescer me marca como excelente

Answer 2

resposta

a) 10x+20=4x+5

10x-4x=-20+5

x=-15/6

b) x/4+x/3=x-100

m.m.c

3x+4x=12x-1200

-5x=-1200

x=-1200/-5

c) 2x/3+5x/6=1/2

m.m.c

8x+10x=6

x=6/18

d) x/5=21-x/2

m.m.c

2x+5x=210

x=210/7

e)4/5+3x/5=1/10+x

m.m.c

16+15x=2+20x

-5x=-14

x=-15/-14