Question

-13x+4=21=4x
0,3x-0,6+0,1x+0,8
7x-16=16=5x
(4x-3)x(-3)=6x+23
ajutor urgent

Answer 1

-13x+4=21=4x
17x=-17
x=-1

0,3x-0,6=0,1x+0,8           
0,2x=1,4
x=7

7x-16=16=5x
2x=32
x=16

(4x-3)x(-3)=6x+23
-12x+9=6x+23
-18x=14
x=-14/18=-7/9