Step-by-step explanation:
5x+23=0
5x=23
x=23-5
(x=7)
6+6=12
8+4=12
or if you mean algebraic equation:
6+x=12
x+4=12
Answer:
b
Step-by-step explanation:
Answer:
Infinitely many solutions.
Step-by-step explanation:
Given

Required;
Find the solution

Make x the subject of formula in (1)

Add 2y to both sides


Divide both sides by 3


Substitute
in (2)



Open Bracket


Collect Like Terms


Based on the result above, the two equations have infinitely many solutions.
B) the internal volume of a tank
1 x 90 x 20 = ?
V = ?