Answer:
Option A
Step-by-step explanation:
Since left and right sides are equal:
Hope that helps.
On the left we have four x-es and two (-1) so: 4•x+2•(-1)
On the right we have one x and four (+1) so: x+4•(+1)
The scarves of scales are balanced, therefore:
4•x + 2•(-1) = x + 4•(+1)
4x - 2 = x + 4
-x -x
3x - 2 = 4
+2 +2
3x = 6
÷3 ÷3
x = 2
x = 0 1 -1 -2
y = -3 -4 -2 -1
equation : 3y+9x = -9
when x = 1
3y+3x = -9
or, 3y + 3×1= -9
or, 3y+3=-9
or, 3y = -12
so, y = -4
Again
Let's suppose x as -1
3y+3x= -9
or, 3y+ 3×-1 = -9
or, 3y-3 = -9
or, 3y = -6
y = -2
Let's suppose x as -2 now,
3y+3×-2 = -9
or, 3y-6 = -9
or, 3y = -3
so, y = -1
96 ft
do 10 * 8 + 8 * 2
~~~~~~
is equal to 16.
