Question

RESOLVER AS SEGUINTES EQUAÇOES DO 1° GRAU
A) 5.(3X+4)+23=4. (3X+6)+39
B) 6.(2X+8)+36=5.(2X+7)+54
C) 4.(5X+9)+29=7.(2X+8)+65
D) 8.(3X+6)+24=5.(3X+4)+76
E) 7.(4X+9)+35=6.(3X+7)+58

QUEM REPONDER SERIO DOU COMO MELHOR RESPOSTA

Answer 1

A) 5.(3X+4)+23=4. (3X+6)+39

15x+20+23 = 12x+24+39

15x+43 = 12x+63

15x-12x = 63-43

3x = 20

$x = \frac{20}{3}$

B) 6.(2X+8)+36=5.(2X+7)+54

12x+48+36 = 10x+35+54

12x+84 = 10x+89

12x-10x = 89-84

2x = 5

$x = \frac{5}{2}$

C) 4.(5X+9)+29=7.(2X+8)+65

20x+36+29 = 14x+56+65

20x+65 = 14x+121

20x-14x = 121-65

6x = 56

$x = \frac{56}{6} = \frac{28}{3}$

D) 8.(3X+6)+24=5.(3X+4)+76

24x+48+24 = 15x+20+76

24x+72 = 15x+96

24x-15x = 96-72

9x = 24

$x = \frac{24}{9} = \frac{8}{3}$

E) 7.(4X+9)+35=6.(3X+7)+58

28x+63+35 = 18x+42+58

28x+98 = 18x+100

28x-18x = 100-98

10x = 2

$x = \frac{2}{10} = \frac{1}{5}$