Question

mim ajudar resolvea as esquacoes a)10×-9=21+2×+3×
b)3×-2×+10=10+5×-40
c)10-8×+4=5×-8×+12
d)2×+2-6×+15=6×-13
e)2×+3×-15=4×+9​

Answer 1

Resposta:

a)×=6

b)10

c)2/5

d)24

Explicação passo-a-passo:

a)10×-3x-2×=21+9

5×=30

×=30/5

×=6

b)3×-2×-5×=10-40-10

-4×=-40 (-1)

×=40/4

×=10

c)-8×+8×-5×=-10-4+12

-5×=-2 (-1)

x=2/5

d)2×+3×-4×=15+9

×=24

Answer 2

Resposta:

a) 10x - 9= 21 + 2x + 3x

10x-2x-3x=21+9

5x=30

x=30/5

x=6

b) 3x-2x+10=10+5x-40

10-10+40=5x-3x+2x

40=4x

x=40/4

x=10

c)10-8x+4=5x-8x+12

10-12+4=5x-8x+8x

2=5x

x=2/5

x=0,4

d)2x+2-6x+15=6x-13

2x-6x-6x=-13-2-15

-10x=-30 (-1)

10x=30

x=30/10

x=3

e)2x+3x-15=4x+9

5x-4x=9+15

x=24