67+52+x=180
119+x=180
x=61
hope this helps!
the equation to be used would be x=180-(67+52)
Answer:
Answer for #10:

Answer for #1:

Step-by-step explanation:
In order to solve a simultaneous equation using the substitution method you have to:
Use one of the equation and substitute it into the other equation, in this case equation <em>B</em><em> </em>was substituted into equation <em>A</em><em>.</em>
<em>
</em>
Therefore since x = 1 - y, equation A would be:

Answer:
its -0.4, are those rlly the options? if they are jus round up and do -1
Answer:
It's 540.
Step-by-step explanation:
You divide 9 by 21 then you multiply it by 1260 and you get 540
D is the answer
40050 divided by 3.14 is 12754.77707