Решите уравнения 1) 80-(35,6+х)=11,5 2) (62,4+у)-13,4=91 3) 9,15+(х-8,5)=21,77...

Question

Решите уравнения
1) 80-(35,6+х)=11,5
2) (62,4+у)-13,4=91
3) 9,15+(х-8,5)=21,77
4)0,175-(0,03-х)=0,15
5) (50-х)+7,16=8,132
6) 100,3-(9,2-х)=97,6

Answer 1

1)80-3.5-х=11.5;  44.4-х=11.5;  -х=11.5-44.4; -х=-32.9
2)62.4+у-13.4=91; 49+у=91;  у=91-49;  у=4;
3)9.15+х-8.5 =21.77;  0.65+х=21.77;   х=21.12
4)0.175-0.03+х=0.15; 0.145+х=0.15; х=0.005

Comments

5) 50-х+7.16=8.132; 57.16-х=8.132; -х=49.028

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6) 100.3-9.2+х-97.6; 91.1+х=97.6; х=6.5