Question

4[(+5)+(-7)]-(-3)[7-(+3)]​

Answer 1

Respuesta:

$4[(+5)+(-7)]-(-3)[7-(+3)]​\\=4\left(-2\right)-\left(-3\right)\left[7-\left(3\right)\right]\\=4\left(-2\right)-\left(-3\right)\cdot \:4\\=-8-\left(-3\right)\cdot \:4\\=-8-\left(-3\right)\cdot \:4\\=-8-\left(-12\right)\\=4$