Question

equação polinomial

14 PONTOS!

a) 3 (x-5) = 4 (x-3)

b) 7x + 35 = 54 - 3x

c) 3 (5-x) - 2 (x-1) = 4 (x-2)

d) x - 3 = 4 (7-x)

e) x - 6 = 3 (7-x)

Answer 1

Explicação passo-a-passo:

a) 3 (x-5) = 4 (x-3)

3×-15= 4× - 12

3×-4× = -12 + 15

-×= 3 (-1)

×= -3

b) 7x + 35 = 54 - 3x

7× + 3× = 54 -35

10×= 19

×= 19/10

c) 3 (5-x) - 2 (x-1) = 4 (x-2)

15 - 3× - 2× + 2 = 4× - 8

- 5× - 4× = -8 -15 -2

-9× = -25 (-1)

×= 25/9

d) x - 3 = 4 (7-x)

x - 3 = 28 - 4×

× + 4× = 28 + 3

5×= 31

×= 31/5

e) x - 6 = 3 (7-x)

×-6= 21 - 3×

× + 3× = 21 + 6

4× = 27

×= 27/4

Bons estudos ❤