作业帮1.3x+2.4*3=12.
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1.3x+2.4*3=12.
1.3x+2.4*3=12.
1.3x+2.4*3=12.
1.3x+2.4*3=12.4
1.3x+7.2=12.4
两边同减去7.2 1.3x+7.2-7.2=12.4-7.2
1.3x=5.2
两边同除以1.3 1.3x÷1.3=5.2÷1.3
解得 x=4
1.3x减2.4×3=12.
1.3x+2.4*3=12.
1.(1/X-1 )-2=X^-3X/X^-12.（X/X+1)^+5(X/X+1)+6=03.（8(X^+2X)/X^-1）+ 3（X^-1)/X^+2x
3道简单的分式方程,1.3/(1-x^) = 2/(1+2x+x) - 5/1-2x+x^2.5x/(x^+x-6) + (2x-5)/(x^-x-12) = (7x-10)/(x^-6x+8)3.(x+1)/(x+2) + (x+6)/(x+7) = (x+2)/(x+3) + (x+5)/(x+6)
2.5x-2.4=1.3x x等于多少,
用因式分解法解下列方程 1.3x^2 -12x=-12 2.4x^2-144=0 3.3x(x-1)=2(x-1) 4.(2x-1)^2=(3-x)^2
10x+2x+5=3x+2x-12.x=?
10x+2x+5=3x+2x-12.x=?
2.4x-1.4x+3x+2.4=0
2.4x+1.4x+2.4=3x
解方程 只要结果,6x-4x=20 1.6+4x=7.6 0.18-6x=0.51 21x-10.8x=8.1 1.6x+2.4x=10.4 6x=96 8x-12.2=3 8.5-5x=3.7 8x-50=0.96 7.8x+0.2x=64.8 1x=10 1.2x-0.5x=2 1.3x=6.3 1.2x+0.3x=3.3 x+3.75=8.42 7x/5=6.3
2.4x-1.4x-3x=5.2-8
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
4x-1.4x-3x+2.4=02.4x-1.4x-3x+2.4=0
3x-2.4=x解方程
3x+2.4x=10.
2.4^x-7.2^x+3=0
2x-7/4x=13 3x+1/3x=20/21 x-0.28x=12.