16-x=12.5怎么解-搜答案-大师作文网

16(x-2)*(x-2)=9(x+3)*（x+3）==>16(x-2)*(x-2)-9(x+3)*（x+3）=0==>[4(x-2)+3(x+3)]*[4(x-2)-3(x+3)]=0==>[7x+

16+X=9/19（36+X）19(16+x)=9(36+x)304+19x=324+9x19x-9x=324-30410x=20x=2

x(16-x)=120怎么解

x(16-x)=12016x-x2-120=0一元二次方程

3x+8=5x-165X-3X=16+82X=24X=12

0.75x+0.50(16-x)=10.500.75x+8-0.5x=10.500.25x=10.5-80.25x=2.5x=2.5÷0.25x=10

咳咳这不是方程.这叫等式.等式多项式.10X-128+16X=10X+16X-128=26X-128然后不能解了.这货是未知数--

4+6X（3x-2）=16x4+18x-12=16x18x-16x=12-42x=8x=4

x=7x12.5%+7x2x=7x0.125+7x2x=0.875+14x=14.875

移项得5/8x=90得到x=144

x+12.5x=1813.5x=18x=18÷13.5x=4/3

X-(12.5%X+12.5%X+16)=48.5x-(25%x+16)=48.5x-25%x-16=48.5(1-25%)x=48.5+1675%x=64.5x=64.5÷75%x=86

x+16=3x怎么解

3x-x=162x=16x=16÷2x=8

(108-x)/x=12.5%108-x=0.125x1.125x=108x=96

0.5x+(20-x)=12.50.5x+20-x=12.5x-0.5x=20-12.50.5x=7.5x=7.5÷0.5x=15

0.25x+0.4x+0.25x+16=xx-0.25x-0.4x-0.25x=160.1x=16x=16÷0.1x=160

12.5x+x=10.8怎么解

12.5x+x=13.5x=10.8x=10.8／13.5所以x=0.8

x+0.36x=16怎么解

x+0.36x=161.36x=16x=16/1.36x=200/17x=11.76

5x+12.5x=19.517.5x=19.5x=19.5/17.5x=39/35

3x+x=16怎么解?

3x+x=164x=16x=16÷4x=4