Question

EQUAÇÕES 1 GRAU
A) 31 x - 458 = 1264

B) 5 x = - 265 18

C) 5 x + 50 = 3 x - 80

D) 6 ( - 4 x + 10 ) = 4 ( - 2 x + 30 )

E) 8 x + 140 - 5 x =410 + 6 X + 720

F) 7 ( x + 15 ) = 4 ( x - 13 )

G) 4 x + 12 - 2 x + 50 = 3 x - 16 + 80

Answer 1

A)31x=1264+458
31x=1722
x=1722/31
x=aprox. 55.55

B)5x=-26518
x=-26518/5
x=5303,6

C)5x+50=3x-80
5x-3x=-80-50
2x=-130
x=-130/2
x=-75

D)6 (-4x+10)=4 (-2x+30)
-24x+60=-8x+120
8x-2x =120-60
6x=60
x=60/6
x=10

E)8x+140-5x=410+6x+720
3x-6x=410+720-140
-3x=410+580
-3x=990
x=-990/3
x=-330

F)7 (x+15)=4 (x-13)
7x+105=4x-52
7x-4x=-52-105
3x=-157
x=-157/3
x=aprox. 53,33

G)4x+12-2x+50=3x-16+80
2x-3x=-16+80-12-50
-x=-16-12-50+80
-x=-28-50+80
-x=-78+80
-x=2. ×(-1)
x=-2
Espero ter ajudado, bons estudos e bom começo de semana!!!!!!
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