42-(32-x)=12; 24-2(2-x)=20

Question

42-(32-x)=12; 24-2(2-x)=20

Answer 1

42-(32-x)=12. 42-32+х=12. 10+х=12. х=12-10. х=2; 24-2(2-x)=20. 24-4-2х=20. 20-2х=20. -2х=20-20. -2х=0. х=0.

Comments

ой 24-4+2х=20. 20+2х=20. 2х=0. х=0.