b=4 i think use order of operations and combining like terms
12(b+2)=8(b+5)
expand 12 : 12b +12 * 2
multiply : 12*2 = 24
expand 8 : 8b + 8 *5
multiply : 8*5 = 40
12b + 24 + 8b + 40
subtract 24 : 12b + 24 - 24 = 8b + 40 - 24
simplify : 12b = 8b + 16
subtract 8b : 12b - 8b = 8b + 16 - 8b
simplify : 4b = 16
divide by 4 : 4b/4 = 16/4
Answer b =4
I hope this helps
12b + 24 = 8b + 40
