Question

resolva as equações abaixo. ​

Answer 1

Resposta:

a) x = 2

b) x = $\frac{20}{3}$   ou   x = 6.66666666667

c) x = -7

d) x = 6

e) x = 10,5

f) x = 6

g) x = -0,5

Explicação passo a passo:

$a)\\4x-1=7\\\\4x=7+1\\\\4x=8\\\\x= \frac{8}{4} \\\\x=2\\\\\\\\\\b)\\3x-9=11\\\\3x=11+9\\\\3x=20\\\\x=\frac{20}{3} \\\\x=6.66666666667\\\\\\\\\\c)\\3x+2=4x+9\\\\2-9=4x-3x\\\\-7=4x-3x\\\\x=-7$

$d)\\5x-2+12=6x+4\\\\5x+10=6x+4\\\\10-4=6x-5x\\\\6=6x-5x\\\\x=6\\\\\\\\\\e)\\2x-6=15\\\\2x=15+6\\\\2x=21\\\\x=\frac{21}{2} \\\\x=10,5\\\\\\\\f)\\2x-4+12=3x-4+2\\\\2x+8=3x+2\\\\8-2=3x-2x\\\\6=3x-2x\\\\x=6$

$g)\\4x-7=2x-8\\\\4x-2x=-8+7\\\\2x= -1\\\\x= \frac{-1}{2} \\\\x=-0,5$

Espero ter ajudado , se precisar estamos aqui a disposição.

(Se realmente merecermos , marque como melhor resposta para nos ajudar) ❤️