Ответ:
1.84 * х = 588
х = 588 : 84
х = 7
2.4 * (18+х)=96
72 +4х=96
4х= 96-72
4х = 24
х=24:4
х=6
3.14х-8х=18
6х=18
х=18:6
х=3
4.50+6х-31=4
19+6х=4
6х=4-19
6х=-15
х=-15:6
х=-2,5
5.13х+20-4х-16+х=54
10х+4=54
10х=54-4
10х=50
х=50:10
х=5.
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Ответ:
1.84 * х = 588
х = 588 : 84
х = 7
2.4 * (18+х)=96
72 +4х=96
4х= 96-72
4х = 24
х=24:4
х=6
3.14х-8х=18
6х=18
х=18:6
х=3
4.50+6х-31=4
19+6х=4
6х=4-19
6х=-15
х=-15:6
х=-2,5
5.13х+20-4х-16+х=54
10х+4=54
10х=54-4
10х=50
х=50:10
х=5.