Answer:
i think... x=6
Step-by-step explanation:
3x+9=x+21
3x−x=12
2x=12
x=6
Answer:
2(7a + 143)
what are the answers or are you asking us to find them
Answer:
No solution
Step-by-step explanation:
Me again. You can apply the same Theorems I posted on your other question, but ill give you a quick summary here. It isn't a triangle because of the Triangle Inequality Theorem (I go into depth with it on the other question).
Answer:
x= 3, y= 4
Step-by-step explanation:
y= 3x -5 -----(i)
y= -x +7 -----(ii)
Substitute (i) into (ii):
3x -5= -x +7
3x +x= 7 +5
4x= 12
x= 12 ÷4 <em>(</em><em>÷</em><em>4</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>
x= 3
Substitute x= 3 into (ii):
y= -3 +7
y= 4
