Надо: |x-4|=2 |y+5|=3 |3+x|=1,5 |7-y|=-2 |x+3|+4=9 - вопрос №4971272425331572349285 от milenairk38 01.02.2021 11:05

Question

Математика: Надо: |x-4|=2 |y+5|=3 |3+x|=1,5 |7-y|=-2 |x+3|+4=9 |y-2|+8=5

milenairk38 · Answer

1. 2x-y=23x+y=8 2x-y=2y=2x-23x+y=83x+2x-2=8 5x-10=0x=10/5x=22x-y=22*2-y=2y=2 2. 4x+y=33x-y=11 4x+y=3y=-4x+33x-y-113x-(-4x+3)=117x-14=0x=14/7x=24*2+y=3 y=-5 3. 4x-3y=34x-7y=-5 4x-3y=3y=-(-4x+3)/34x-7y=-54x-7*(-(-4x+3)/3)=-5-16/3x+12=0x=12/(16/3)x=2.254x-3y=34*(2.25)-3y=36-3y=0 y=6/3y=2...