Question

(x+160)+70=280 и 5*(x-10)=290 решите плиз

Answer 1

(x+160)+70=280
х+160=280-70
х+160=210
х=210-160
х=50

5*(x-10)=290 
х-10=290:5
х-10=58
х=58+10
х=68

Answer 2

(x+160)+70=280
x+160=280-70
x+160=210
x=210-160
x=50 



и 5*(x-10)=290
5x-50=290
5x=340
x=340/5
x=68