Question

Resolva as equações abaixo
3x+5=8

2x-7=-10

0,5x+2,6=5,1

5x-27=4x

Answer 1

Explicação passo-a-passo:

$3x + 5 = 8$

$3x = 8 - 5$

$3x = 3$

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

$x = 1$

$2x - 7 = - 10$

$2x = - 10 + 7$

$2x = - 3$

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

$0.5x + 2.6 = 5.1$

$0.5x = 5.1 - 2.6$

$0.5x = 2.5$

$x = \frac{2.5}{0.5}$

$x = \frac{2.5 \times 2}{0.5 \times 2}$

$x = \frac{5}{1}$

$x = 5$

$5x - 27 = 4x$

$5x - 4x = 27$

$x = 27$

Answer 2

Resposta:

a) 2x-7=10

a) 2x=17

a) x=17/2

a) x= 8,5

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b) 0,5x +2,6=5,1

b) 0,5x=-2,5

b) x= 2,5/0,5

b) x= -5

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c) 5x-27=4x

c) x= 27