Question

ćw matematyka z plusem kl.6 wersja b arytmetyka i algebra str 88 prosze na jutro daje 100 pkt jak ktoś pomoże​

Answer 1

Verified answer

ZAD 11

2x - 12 = 6

2x = 6 + 12

2x = 18

x = 9

4 + 5x = 34

5x = 34 - 4

5x = 30

x = 6

-8x + 10 = 4

-8x = 4 - 10

-8x = -6

x = 3/4

9 - x = 21

-x = 12

x = -12

1/3x - 4 = 5

1/3x = 5+4

1/3x = 9 /·3

x = 27

ZAD 12

a) -2x = 2 /:(-2)

x = -1

b) x = 5-2

x = 3

c) -x + 4 = 0

-x = -4

x = 4

d) 42 + 3x = 12

3x = -30

x = -10

e) 2y - 4 = 6

2y = 10

y = 5

f) -1/2z = -5

z= 10

Mam nadzieję że pomogłam!!! :))