6х + 5х + 4х = 150
( х - 8 ) + 30 = 65
8х + х - 4х - 40 = 160
310 + 7х = 380
4 * х * 250 = 10 000
90 : х - 32 = 13
( х - 8 ) * 12 = 132
( х - 8 ) + 30 = 65
8х + х - 4х - 40 = 160
310 + 7х = 380
4 * х * 250 = 10 000
90 : х - 32 = 13
( х - 8 ) * 12 = 132
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15х=150
х=150/15
х=10
( х - 8 ) + 30 = 65
х-8=65-30
х=25+8
х=33
8х + х - 4х - 40 = 160
5х=160+40
5х=200
х=200/5
х=40
310 + 7х = 380
7х=380-310
7х=70
х=70/7
х=10
4 * х * 250 = 10 000
4х=10000/250
4х=40
х=40/4
х=10
90 : х - 32 = 13
90/х=13+32
90/х=45
х=90/45
х=2
( х - 8 ) * 12 = 132
12х-96=132
12х=132+96
12х=228
х=228/12
х=19
х*(6+5+4)=150
15х=150
х=150:15
х=10
2)(х-8)+30=65
х-8=65-30
65-30=35
х-8=35
х=35+8
х=43
3)8х+х-4х-40=160
8х+х=9х
9х-4х=5х
5х=160
х=160:5
х=32
4)310+7х=380
380-310=70
х=70:7
х=10
5)4*х*250=10000
10000:250=40
х=40:4
х=10
6)90:х-32=13
90:х=32+13
32+13=45
х=90:45
х=2
7)(х-8)*12=132
132:12=11
х-8=11
х=8+11
х=19