Question

1-resolva as equações abaixo
a) 20×-8×=120

b) 30×-16×=98

c) 46×+4=4

d) 15×-16=9×+20

e) 20×-12=4×+38

f)24-14+8×=50

me ajudem por favor
(*!*) !!!!!​

Answer 1

a) 20x - 8x = 120

12x = 120

$\frac{12x}{12}$ = $\frac{120}{12}$

x = 10

b) 30x - 16x = 98

14x = 98

$\frac{14x}{14}$ = $\frac{98}{14}$

x = 7

c) 46x + 4 = 4

46 x + 4 - 4 = 4 - 4

46x = 0

$\frac{46x}{46}$ = $\frac{0}{46}$

x = 0

d) 15× - 16 = 9× + 20

15x - 16 + 16 = 9x + 20 + 16

15x = 9x + 36

15x - 9x = 9x + 36 - 9x

6x = 36

$\frac{6x}{6}$ = $\frac{36}{6}$

x = 6

e) 20× - 12 = 4× + 38

20x - 12 + 12 = 4x + 38 + 12

20x = 4x +50

20x - 4x = 4x + 50 - 4x

16x = 50

$\frac{16x}{16}$ = $\frac{50}{16}$

x = $\frac{25}{8}$

f) 24 - 14 + 8× = 50

8x + 10 = 50

8x + 10 - 10 = 50 - 10

8x = 40

$\frac{8x}{8}$ = $\frac{40}{8}$

x = 5

Espero ter ajudado!