Question

280:( х + 3 ) - 5 = 7

Answer 1

280:(х+3)-5=7
280:(х+3)=7+5
280:(х+3)=12
12*(х+3)=280
12х+36=280
12х=280-36
12х=244
х=244:12
х=20,3
280:(20,3+3)-5=7
280:23,3-5=7
12-5=7
7=7