Question

40 +x=-15
27+40+16=83
p-89=86
[3+2-(9-7)+(3+4)]
m+25+32=-91
32-51-36=-55
y-3=-7

Answer 1

1)
$40 + x = - 15 \\ x = - 15 - 40 \\ x = - 55$

2)
$27 + 40 + 16 = 83 \\ 83 = 83$

3)
$p - 89 = 86 \\ p = 86 + 89 \\ p = 175$

4)
$(3 + 2 - (9 - 7) + (3 + 4)) \\ 3 + 2 - 2 + 7 \\ 3 + 2 + 7 - 2 \\ + 12 - 2 \\ + 10$

5)
$m + 25 + 32 = - 91 \\ m + 57 = - 91 \\ m = - 91 - 57 \\ m = - 148$

6)
$32 - 51 - 36 = - 55 \\ 32 - 87 = - 55 \\ - 55 = - 55$

7)

$y - 3 = - 7 \\ y = - 7 + 3 \\ y = - 4$

espero haberte ayudado