C adding a number to itself
Answer:
correspond to the four place values- ones, tens, hundreds and thousands. When a number is written in standard form, each group of digits is separated by a comma which forms a period.
<span>X+3y=10
X-5y=-2
--------------subtract
8y = 12
y = 12/8 = 3/2 = 1.5
</span><span>X+3y=10
x = 10 - 3y
x = 10 - 3(1.5)
x = 10 - 4.5
x = 5.5
answer
x = 5.5 and y = 1.5 </span>