1. (х+1)*40=45х
40x+40=45x
5x=40
x=82. 2.5х+4=4*(х-2)
2.5x+4=4x-8
1.5x=12
x=83. (х+10)*9=(х-2)*11
9x+90=11x-22
2x=112
x=56
1. 40x+40-45x=0
x=8
2. 2,5x+4-4x+8=0
1,5x+12=0
1,5x=-12
x=-8
3. 9x+90-11x+22=0
-2x+112=0
1. (х+1)*40=45х
40x+40=45x
5x=40
x=8
2. 2.5х+4=4*(х-2)
2.5x+4=4x-8
1.5x=12
x=8
3. (х+10)*9=(х-2)*11
9x+90=11x-22
2x=112
x=56
1. 40x+40-45x=0
5x=40
x=8
2. 2,5x+4-4x+8=0
1,5x+12=0
1,5x=-12
x=-8
3. 9x+90-11x+22=0
-2x+112=0
2x=112
x=56