Question

6(4z+2)+7(-5z+3)=66 me ajudem pfv

Answer 1

6(4z+2)+7(-5z+3)=66   Aplique a "propriedade distributiva:

24z + 12 - 35z + 21 = 66      Agora separe os termos 

24z - 35z = 66 - 12 - 21       Efetue as operações:

-11z = 33

z = - 33/11

z = -3

Answer 2

$\large\begin{array}{l} \textsf{Resolver a equa\c{c}\~ao do }\mathsf{1^\circ}\textsf{ grau:}\\\\ \mathsf{6(4z+2)+7(-5z+3)=66}\\\\\\ \textsf{Aplique a distributiva para eliminar os par\^enteses:}\\\\ \mathsf{24z+12-35z+21=66}\\\\ \mathsf{24z-35z+12+21=66}\\\\ \mathsf{-11z+33=66} \end{array}$

$\large\begin{array}{l} \mathsf{-11z=66-33}\\\\ \mathsf{-11z=33}\\\\ \mathsf{z=\dfrac{33}{-11}}\\\\ \boxed{\begin{array}{c}\mathsf{z=-3} \end{array}}\quad\longleftarrow\quad\textsf{esta \'e a resposta.} \end{array}$


$\large\begin{array}{l} \textsf{Conjunto solu\c{c}\~ao: }\mathsf{S=\{-3\}.} \end{array}$


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$\large\begin{array}{l} \textsf{D\'uvidas? Comente.}\\\\\\ \textsf{Bons estudos! :-)} \end{array}$


Tags: equação do primeiro grau solução resolver álgebra