Answer:
x = 
Step-by-step explanation:
Given equation is,
ax + 3 = 23
To solve this equation for the value of x isolate the variable 'x' on the one side of the equation.
Step 1,
Subtract 3 from both the sides of the equation.
ax + 3 - 3 = 23 - 3
ax = 20
Step 2,
Divide the equation by a,

x = 
Therefore, x =
will be the answer.
C) x = -19/10 because when solving it with substitution u get x=-19/10 & y=153/10
Answer:
B: 1620cm2
Step-by-step explanation:
16×15×2+30×20
Answer:
1
Step-by-step explanation:2 and 6 are the first ones in each set so 6-2 is 4.4 and 1 are the second ones in each set 1-4 is -3 4+-3 is 1.