Question

22 05- Efetue : a) -8 +5 = b) -15 +3 c) -10 + 4 = d) +12 -20 - e) 12 - 4 = f) 15 - 20 = g) -5 + 5 = h) -78 +45 = i) +26 - 38 = 1) 59 - 37 =



alguém me ajuda urgente :(​

Answer 1

$\large\boxed{\begin{array}{l} \displaystyle \sf a)-8+5\\\displaystyle \sf =-3\\\\\displaystyle \sf b)-15+3\\\displaystyle \sf =-12\\\\\displaystyle \sf c)-10+4\\\displaystyle \sf= -6 \\\\\displaystyle \sf d)+12-20\\\displaystyle \sf =-8\\\\\displaystyle \sf e)12-4\\\displaystyle \sf =8 \sf\end{array}}$

$\large \boxed{\begin{array}{l} \displaystyle \sf f)15-20\\\displaystyle \sf =-5\\\\\displaystyle \sf g) -5+5\\\displaystyle \sf =0\\\\\displaystyle \sf h)-78+45\\\displaystyle \sf =-33\\\\\displaystyle \sf i)+26-38\\\displaystyle \sf =-12\\\\\displaystyle \sf 1)59-37\\\displaystyle \sf = 22 \sf \end {array}}$