Question

simplify the following​

Answer 1

Answer:

-39,123

Step-by-step explanation:

a.(-7)+(-6)+2-[(-5)×(-4)-(-3-5)]

(-7)+(-6)+2-[20-(-3-5)]

(-7)+(-6)+2-[20-(-8)]

(-7)+(-6)+2-[20+8]

(-7)+(-6)+2-28

-13+2-28

-39

b.121+[17-{15-3(8-5)}]

121+[17-{15-3+3}]

121+[17-{15+0}]

121+[17-15]

121+2

123

Hope It helps !