Answer:
260 = d + 236 or d + 236 = 260
Step-by-step explanation:
Mental Math
x = 5, y = 2
just trust me, I used a calculator
x=2
5x +(3-1) =12
5x +2 =12
5x =12-2
5x =10
x =10÷5
x =2
12.4 did this before