Question

Rezolvați in Z ecuatiile:
a) 4 - 3x = x + 12
b) -x + 7 = x + 21
c) 3 - 2x = -x +6
d) 6 + 3x= -54 + x
e) 1+ 9x = -89-x
Help plz ​

Answer 1

-3x-x=-4+12

-2x=+8

x=8÷(-2)

x=-4

-x-x=-7+21

-2x=+14

x=14÷(-2)

x=-7

-2x+x=-3+6

-3x=3

x=3÷-3

x=1

3x-x=-6-54

2x=-60

x=-60÷2

x=-30

10x=-89-1

10x=90

x=90÷10

x=9

pls coroana?