Question

Me ajudem por favor!! :))

Answer 1

x=40-y

40-y-y=20

-2y=20-40

2y=20

y=10

x=40-10

x=30

a)30-10=20

b)30*10=300

c)300+100=400

d)30/10=3

2.

y=13+x

3x-2(13+x)= -15

3x-26-2x= - 15

x=-15+26

x = 11

-11+y=13

y=13+11

y=24

11+24/11*24

35/264=0,132.