Question

4x+5x= x-0.4x= a乘a乘a=8 24x-8x= 4.5a-a= 4.5a-a a乘5乘b a乘1 x+4x

Answer 1

4x+5x=9x

x-0.4x=0.6x

a乘a乘a=8,a=2

24x-8x=16x

4.5a-a=3.5a

a乘5乘b=5ab

a乘1=a

x+4x-2x=3x

x+4x=10,x=2