Question

Contas de matematica
a)4×+3=2×-5=
b)6×+1=3×+10=
c)1-2×=7-5×=
d)7+3×=2-5×=
e)6-4×=9-5×=​

Answer 1

Resposta:

a)

4x +3 = 2x - 5

4x - 2x = - 5 - 3

2x = - 8

$x = \frac{ - 8}{2} \\ \\ x = - 4$

b)

6x + 1 = 3x + 10

6x - 3x = 10 - 1

3x = 9

$x = \frac{9}{3} \\ \\ x = 3$

c)

1 - 2x = 7 - 5x

- 2x + 5x = 7 - 1

3x = 6

$x = \frac{6 }{3} \\ \\ x = 2$

d)

7 + 3x = 2 - 5x

3x + 5x = 2 - 7

8x = - 5

$x = - \frac{5}{8}$

e)

6 - 4x = 9 - 5x

- 4x + 5x = 9 - 6

x = 3

Bons Estudos!

Answer 2

Resposta:

Olá!!!

$a)4x + 3 = 2x - 5 \\ 4x + 2x = 5 - 3 \\ 6x = 2 \\ x = 6 \div 2 \\ x = 3$

$b)6x + 1 = 3x + 10 \\ 6x - 3x = 10 - 1 \\ 3x = 9 \\ x = 9 \div 3 \\ x = 3$

$c)1 - 2x = 7 - 5x \\ 2x + 5x = 7 + 1 \\ 7x = 8 \\ x = 8 \div 7 \\ x = 1.14$

$d)7 + 3x = 2 - 5x \\ 3 x + 5x = 7 - 2 \\ 8x = 5 \\ x = 8 \div 5 \\ x = 1.6$

$e)6 - 4x = 9 - 5x \\ 4x + 5x = 9 + 6 \\ 9x = 15 \\ x = 15 \div 9 \\ x = 1.66$

ATT:MIRANDA ;)