9х-72=909 21-(5х-11)=12

Question

9х-72=909
21-(5х-11)=12

Comments

9x - 72 = 909. 9x=909+72 9x=981. x=109

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21-(5x-11)=12. 21-5x+11=12. 32-12=5x. 20=5x. x=4

Answer 1

1.)9х - 72=909
9х = 981
х=109

2)21-(5х-11)=12
5х-11=9
5х=20
х=4