2. Solution: 4x-3x=6-4
x=2
3. Solution: 8x-7x=4+3
x=7
4. Solution: Suppose she did the X problem correctly.
8x-5( 10-x)=4 1
8x-50+5x=4 1
13x=9 1
x=7
5. Solution: Workshop A has 7x employees and Workshop B has 3x employees. ..
(7x-30):(3x+30)=3:2
2(7x 30)= 3(3x+30)
14x-60=9x+90
14x-9x=90+60
5x= 150
x=30
Therefore, there are 30×70=2 10 people in Workshop A and 30×30=90 people in Workshop B. ..