Fill in the missing number:
?:(−6)+[−2(94−73)]=−153
We begin by solving the innermost parentheses:
94−73=21
We obtain the following calculation:
x:(−6)+[−2(21)]=−153
Next we focus on the parentheses and multiply:
−2×21=−42
We obtain the following calculation:
x:(−6)+(−42)=−153
Let's consider the multiplication between minus and plus:
x:(−6)−42=−153
We swap sections:
x:(−6)=−153+42
x:(−6)=−111
−6x=−111
Lastly we multiply by minus 6:
x=−111×−6=666