Question

6. Calcula: S = (-7)(-7)-(-9)(11) - (30) + (-5)
a) 120
d) 154
b) 153
e) 130
c) 155

7. Resuelve:
Q = (-42) = (-6) - (-12)(+3) + (-4)(-5)
a) 61
d) 64
b) 62
e) 65
c) 63​

Answer 1

(-7)(-7)-(-9)(11)-(30)÷(-5)

49+9(11)+30÷5

49+99+6

154