stefmy87 stefmy87

11-02-2022
Mathematics

contestada

[tex]-1/4 +3/4a= -(-7/4a-1)[/tex]

Respuesta :

Medunno13 Medunno13

09-07-2022

[tex]-\frac{1}{4}+\frac{3}{4}a=-\left(-\frac{7}{4}a-1 \right)[/tex]

Multiplying both sides by 4,

[tex]-1+3a=-(-7a-4)\\\\-1+3a=7a+4\\\\-1=4a+4\\\\-5=4a\\ \\ a=\boxed{-1.25}[/tex]

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