Resposta :
Resposta:3
+
5
(
+
1
)
=
2
1
3x+{\color{#c92786}{5(x+1)}}=21
3x+5(x+1)=21
3
+
5
+
5
=
2
1
3x+{\color{#c92786}{5x+5}}=21
3x+5x+5=21
2
Combine os termos semelhantes
3
+
5
+
5
=
2
1
{\color{#c92786}{3x}}+{\color{#c92786}{5x}}+5=21
3x+5x+5=21
8
+
5
=
2
1
{\color{#c92786}{8x}}+5=21
8x+5=21
3
Subtraia
5
5
5
dos dois lados da equação
8
+
5
=
2
1
8x+5=21
8x+5=21
8
+
5
β
5
=
2
1
β
5
8x+5{\color{#c92786}{-5}}=21{\color{#c92786}{-5}}
8x+5β5=21β5
4
Simplifique
Resolva a subtração
Resolva a subtração
8
=
1
6
8x=16
8x=16
5
Divida os dois lados da equação pelo mesmo termo
8
=
1
6
8x=16
8x=16
8
8
=
1
6
8
\frac{8x}{{\color{#c92786}{8}}}=\frac{16}{{\color{#c92786}{8}}}
88xβ=816β
6
Simplifique
Cancele os termos que estΓ£o tanto no numerador quanto no denominador
Calcule a divisΓ£o
=
2
x=2
x=2
Solução
=
2
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