Question

1) 15+x=3+9
2) -8-3+x=6-10
3) -6-7+x= -6-9
4) 5+x=-9-9
5) 15+x+6=-100

Answer 1

Explicação passo-a-passo:

1) 15+x=3+9

x = 12 - 15

x = -3

2) -8-3+x=6-10

x= -4 + 8 + 3

x = 7

3) -6-7+x= -6-9

x = -15 + 7 + 6

x = -2

4) 5+x=-9-9

x = -18 -5

x = -23

5) 15+x+6=-100

x = -100 -15 -6

x = -121