Answer:
Step-by-step explanation:
3x+y=2............(1)
4y=12-12x........(2)
Making y as subject in (1) and substitute in (2)
y = 2 - 3x......(3)
4(2 - 3x) = 12-12x
8 - 12x = 12 - 12x
12x - 12x = 12- 8
0 = 4
So no solution since variable cancelled out
Multiply both sides by 3 to cancel out the 3 in the denominator of the left side of the equal sign. You get:
x + 4 = 18
Now subtract 4 from both sides to get variables one side, constants on the other.
x = 18 - 4
x = 14
Your answer is x = 14
Answer:
B=70
Step-by-step explanation:
A+B=180
5x+25+3x+19=180
8x+44=180
8x=136
x=17
B=3(17)+19
B=51+19
B=70
Answer:
29/40
Step-by-step explanation:
Answer:
42
Step-by-step explanation:
because perimeter means add, so add all the number up to get the answer 42
