Odpowiedź:
+(−) = -
b) 2−(+4) = 2 - 4 = -2
c) 7−(−+6) = 7 + 6 = 13
d) −(+4+(−5) = -(4 - 5) = -(-1) = 1
e) 1−(+)−(−2) = 1 - + 2 = 1 - 2 = -1
f) –(−+2)+(−2−4) = 2 - 6 = -4
g) (+)−(2−)−(−2) = -2 - + 2 = -2 - 2 = -4
h) (3−+1)−(+)+(−) = 2 - - = 2 +
i) −(+)−(3+2)+(5−3) = - -5 + 2
j) (2++3)−(3−+3) = 5 - 0 = 5
k) (42 −3)−(+0,12)−(2 −0,1) = 39 - 0,12 - 1,9 = 39 - 2,02 = 36,98
Szczegółowe wyjaśnienie:
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Odpowiedź:
+(−) = -
b) 2−(+4) = 2 - 4 = -2
c) 7−(−+6) = 7 + 6 = 13
d) −(+4+(−5) = -(4 - 5) = -(-1) = 1
e) 1−(+)−(−2) = 1 - + 2 = 1 - 2 = -1
f) –(−+2)+(−2−4) = 2 - 6 = -4
g) (+)−(2−)−(−2) = -2 - + 2 = -2 - 2 = -4
h) (3−+1)−(+)+(−) = 2 - - = 2 +
i) −(+)−(3+2)+(5−3) = - -5 + 2
j) (2++3)−(3−+3) = 5 - 0 = 5
k) (42 −3)−(+0,12)−(2 −0,1) = 39 - 0,12 - 1,9 = 39 - 2,02 = 36,98
Szczegółowe wyjaśnienie: