Question

ajutor repede va rog

Answer 1

x+2a-2b=8

x+2×4=8

x+8=8

x=8-8

x=0


x+1=30+5a-5b

x+1=30+5•4

x+1=30+20

x=30+20-1

x=49


5a-5b-x=10

5•4-x=10

20-x=10

x=20-10

x=10


x+16+8a-8b=49

x+16+8•4=49

x+16+32=49

x=49-16-32

x=1