Question

a) 2(3x+1)=7
b) -2(3+x)=5
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Answer 1

Resposta:

vamos tentar

Explicação passo-a-passo:

a) 2(3x + 1) = 7

faz a distributiva

6x + 2 = 7

passa o 2 pro lado do 7

6x= 7 - 2

6x = 5

x = 5/6

Answer 2

Resposta:

$a)\\ \\2(3x+1)=7\\ \\6x+2=7\\ \\6x=7-2\\ \\6x=5\\ \\x=\frac{5}{6}\\ \\ \\b)\\ \\-2(3+x)=5\\ \\-6-2x=5\\ \\-2x=5+6\\ \\-2x=11.(-1)\\ \\2x=-11\\ \\x=-\frac{11}{2}~~~~ou~~~~-5,5$