連立方程式(かっこ3)
連立方程式を解け
3(2x+y)=3x-7y+23 2(3x+7y)-7x=27-7(x+3y)=2(6x-5y)-25 11y+6(3x-2y)=-22x=-5y+7 3(-2x+y)=4(x+3)+243(3x-y)=-5(2x-3y)-15 y=3x-54x-3y=2(7x+y)-10 7(6x-1)+3(8y-5)=-42(5x-2y)=3(4x-y)-11 4x+7y=-132(4x-3y)=7(x-y)+8 3(x+1)=2(-2y+9)+65(x+4y)=2(2x+6y+7)+13 4x+11y=5(2x+3y+2)+4-5(2x-y+7)=2x-3y+9 7x+y+5=3(3x-4y-14)-4-8x=2(-7x+3y)+18 7(2x-3y+5)=2x-14(3x+2y)=3(x-y-8)-13 5(-3x-4y-2)=-7(-3x-2y)-2-5(7x+6y)=10(-3x+y)+35 6(4x-9y-5)=2(8x-9y)+14
解説リクエスト