159+3x=351-13x
3x+13x=351-159
16x=192
x=192:16
x=12
222, 223, 232, 233, 322, 323, 332, 333.сумма чисел (6, 7, 7, 8,7, 8, 8, 9)
1) 4+2=6
2) 3+5=8
3) 2+3=5
1.lived
2.bought
3. was reading
4.saw
5. have met
6.was doing
7.have visited
8.was
9.hasn't came yet
10.were playing
11. have doen
12.read
13.was sleeping
14.played
15.was
Х + (х - 0,14) = 5,14
2х - 0,14 = 5,14
2х = 5,28
х = 2,64
х - 0,14 = 2,5
х кг пирожков сьел пончик, а х - 0,14 - незнайка
1) 5х+15у+8х-16у=13х-1у
2)23х+15х+20у+2у=38х+22у
3)7х+32+3у+4х+16у=11х+19у+32
4)45х+18х+24у-10у=63х+14у
5)32х+80+68+6х-31=38х+117
6)25+7х+6х+30+123=13х+178
7)4у+64+18у+42-34=22у+72
8)2х+72+3х+24+43=5х+139
9)2(24+4х+8)+81+31х=48+8х+16+81+31х=39х+145