Yes it is thirty because when u do 5×2×3 the correct answer turns out to be 30 $o yes!!!!!!
Can't read it it's blurry. Sorry.
equation has infinitely many solutions has the same number on both sides of the equal sign
-3x -21 + x + 5 = -20x -16
-2x -16 = -20x -16
so either you have -18x on the left or +18x in the right
400 - 2 x Age = 244
-2*Age = -156
Age = 78 years