Помогите решить 2 уравнения

Question

Помогите решить 2 уравнения

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Answer 1

А. 12+8.3х+1.5х=95.3
9.8х=95.3-12
9.8х=83.3
х=83.3/9.8
х=8.5

б. 6.7у+13+3.1у=86.5
6.7у+3.1у=86.5-13
9.8у=73.5
у=73.5/9.8
у=7.5

Answer 2

12+8.3х+1.5х=95.3
8.3х+1.5х=95.3-12
9.8х=83.3
х=83.3/9.8
х=8.5