Resolva a expressão numérica
1) -8+{8-12)+(13+12)]-10}
2) 3-{2+(11-15)-[5+(-3+1)+8}
3) [-1+(22-5•6)]÷(-5+2)+1
4) [(24-8)•2-24]÷[22-(-3+2)]
1) -8+{8-12)+(13+12)]-10}
2) 3-{2+(11-15)-[5+(-3+1)+8}
3) [-1+(22-5•6)]÷(-5+2)+1
4) [(24-8)•2-24]÷[22-(-3+2)]
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-8+{29-10}
-8+19= +11
2) 3-{2+4-[5+(-3+1)+8}
3-{2+4-[5+(-2)+8}
3-{2+4-5-2+8}
3-9=-6
3) [-1+(22-30)]÷(-3+1)
[-1-8]÷(-3+1)
[-1-8]÷-2
-9÷-2= -4,5
4) [16•2-24]÷[22-(-3+2)]
[16•2-24]÷[22-1]
[32-24]÷21
8÷21=0,380...