6x+13.5=50+x 7.8x-1.7+1.2x=5.5
1个回答
6x+13.5=50+x
5x=36.5
x=7.3
7.8x-1.7+1.2x=5.5
9x=7.2
x=0.8
相关问题
3(82+x)=471 (x-1.8)÷4=2.5 5((X-1.8)=1.7 6(1.5+x)=13.8
1.5/17X5/12X17 2.7/13+7/13X12 3.6/7-6/7X8/15 (简便计算、求过程)
解方程: 2.7×2-1.5x=0 13x-6.8x+x=46.8 2.6x-6.5+3.5=10 2×(x-0.7)=
因式分解:(1)x^2-7x+6(2)x^2-5x+6(3)x^2-5x-6(4)x^2-7x+8(5)x^2-7x+1
解一道分式方程,1/(x+5)+1/(x+8)=1/(x+6)+1/(x+7)做到(2x+13){(x+6)(x+7)-
1/1x2x3x4+1/2x3x4x5+1/3x4x5x6+1/4x5x6x7+1/5x6x7x8+1/6x7x8x9+
1.-3-2x(-5) 2.8-(-6)x(-7+5) 3.7-24x(-1/3+5/6)
解方程.2x+1=6 13x+5x=5.4 x+ 1 5 =0.4 4 7 +x= 7 10 .
解方程①5x-1.2=1.8②1.7+7.8-x=5.6③6.4x-x=32.4.
7x-5/4=3/82x-1/6=5x+1/81/2x-7=9x-2/62x+1/3-5x-1/6=13/10(200+