Question

URGENTE!!!!!!!


Calcule a raiz ou solução das seguintes equações, sendo U = Q


a) 3x + 5 = 19


b) 2 (x – 1) – 7 = 16


c) 4x + 7 = 3x + 40


d) 5x + 10 – 3 = 4x + 46


e) 5x + 190 + 2x = 1450


f) 2x + 3x = 140


g) 212x + 10 = 8 + 80


h) 5x = 150


i) 7 (x -2) = 5 (x + 3)


j) 2 (x - 6) = -3 (5 + x)

Answer 1

Resposta:

a) x = $\frac{14}{3}$

b) x = 12,5

c) x = 33

d) x = 39

e) x = 180

f) x = 28

g) x = 0,3679245283

h) x = 30

i) x = 14,5

j) x = -0,6

Explicação passo a passo:

$a)\\3x+5=19\\\\3x=19-5\\\\3x=14\\\\x=\frac{14}{3} \\\\x=4,66666666667\\\\\\\\B)\\2(x-1)-7=16\\\\2x-2-7=16\\\\2x-9=16\\\\2x=16+9\\\\2x=25\\\\x=\frac{25}{2} \\\\x=12,5\\\\\\\\C)\\4x + 7 = 3x + 40\\\\4x-3x=40-7\\\\4x-3x=33\\\\x=33$

$D)\\5x + 10-3 = 4x + 46\\\\5x+7=4x+46\\\\5x-4x=46-7\\\\x=39\\\\\\E)\\5x + 190 + 2x = 1450\\\\7x+190=1450\\\\7x=1450-190\\\\7x=1260\\\\x=\frac{1260}{7} \\\\x=180\\\\\\\\F)\\2x + 3x = 140\\\\5x=140\\\\x=\frac{140}{5} \\\\x=28\\\\\\G)\\212x + 10 = 8 + 80\\\\212x=88-10\\\\212x=78\\\\x=\frac{78}{212} \\\\x=0,3679245283$

$H)\\5x=150\\\\x=\frac{150}{5} \\\\x=30\\\\\\I)\\7 (x -2) = 5 (x + 3)\\\\7x-14=5x+15\\\\7x-5x=15+14\\\\2x=29\\\\x=\frac{29}{2} \\\\x=14,5\\\\\\J)\\2 (x - 6) = -3 (5 + x)\\\\2x-12=-15-3x\\\\2x+3x=-15+12\\\\5x=-3\\\\x=\frac{-3}{5} \\\\x=-0,6$

Espero ter ajudado , se precisar estamos aqui a disposição.          

(Se realmente merecermos , marque como melhor resposta para nos ajudar) ❤️