Question

Resolva as equação do 1°grau sendo U=Q
5×+4-2×=28-3×
B)1-4(×-5)=0

Answer 1

Resposta:

(a) 4

(b) 21/4

Explicação passo a passo:

(a)

$5x + 4-2x = 28-3x\\5x - 2x+3x = 28 - 4\\6x = 24\\x=\frac{24}{6}\\x=4$

(b)

$1-4(x-5)=0\\1-4x+20=0\\-4x=-21\\x = \frac{-21}{-4}\\x = \frac{21}{4}$