Answer:
b= 7 - (3a/4)
Step-by-step explanation:
Assuming you don't know what "a" equals:
-subtract 3a/4 from both sides
b= 7 - (3a/4)
The two systems have the same solution.
The correct answer is 3) since the first equation of system B is indeed the addition of the first equation of system A and 4 times the second equation of system A.
Answer: 3)
Answer:
The 2nd choice is correct
Step-by-step explanation:
Answer:
X=60
Step-by-step explanation:
The little square near 150 means- that angle is right, i.e 90.
Like you can see, x, 30 and 90 are on the the same straight line, so the some of them is 180.
30+90+x=180
120+x=180
x=60