Question

A=7-3×(18-6×5)+24×(-2)-(-37)
B=6-8×(-3+7)-(-13+4×8)
________________
8-3×4 +(-6)
(e uma fração)
preciso mesmo de ajuda pfvr ​

Answer 1

Resposta:

Certo!

• Comece pelos parênteses e multiplicações;

$a)7-3*(18-6*5)+24*(-2)-(-37)=\\\\7-3*(18-30)-48+37=\\\\7-3*(-12)-11=\\\\7+36-11=\\\\7+25=\\\\32$

$b)\dfrac{6-8*(-3+7)-(-13+4*8)}{8-3*4 +(-6)} =\\\\\\\dfrac{6-8*(+4)+13+32}{8-12 -6} =\\\\\\\dfrac{6-32+13+32}{8-18} =\\\\\\\dfrac{6+13}{-10} =\\\\\\\dfrac{19}{-10}$