Step-by-step explanation:
x+y=12
3×+y=20
×=12-y
3 (12-y)+y=20
36-3y+y=20
36-4y=20
-4y=20-36
-4y= -16
y =16÷4
y=4
×+y=12
×+4=12
×=12-4
×=8
therefoer;y=4,x=8
Answer:
OK but first follow me .plz........
Answer:
the answer is 18 cause if u replace it is will give 45 +45 for the angle beside would give u 90
An integer is a positive or negative whole number. It can not be a fraction nor a decimal.