連立方程式(小数2)
連立方程式を解け
2(x-3y)-3x=5 0.3x+0.7y=-0.45y-3(-4x+3y)=-28 0.3x-0.2y=-0.80.5x+3(0.2x-0.3y)=1.6 0.2(2x+7y)+1.2=-3.40.3y-0.5(2x+3y)=3 8(0.1x+0.5y)=-17.60.2(2x+1)+0.4(5y-2)=-6.6 2(-0.6x+0.7y)=-11.63(0.5x-0.6y)=-21.9 -1.2(x-3)+0.9(4y-15)=24.90.4(2x-3y)=-0.3x+6.2 -1.2(-7x+5y)=-2y+11.25(0.2x-0.3y+0.6)=0.4x-11.1 0.3(-x+2y)=-0.8y+11.60.3x-0.2y=3(0.5x-1.2y)+4.6 -0.7x+1.5=-0.1(2x+8y)+2.80.7x+1.8=0.2(-3x+8y)-4 -4(0.2x-0.1y)=0.9y+0.61.4x+1.3y-2.2=0.5(2x+y)-3.8 -2(0.7x-0.2y)=-1.5x-1.2-0.3(x+3y)=2(-0.2x+0.5y)+6.9 -1.2y=-0.1(3x-4y)+8.4
解説リクエスト