Multiply 5x to 3x and -2
multiply 6 to 3x and -2
15x^2-10x+18x-12
15x^2+8x-12
Answer:
x=23
Step-by-step explanation:
Hello There!
Remember the exterior angle of a triangle is equal to the opposite interior angles of a triangle
so
137-x=2x+3x-1
now we can solve for x
step 1 combine like terms
2x+3x=5x
now we have
137-x=5x-1
step 2 add 1 to each side
-1+1 cancels out
137+1=138
138-x=5x
step 2 add x to each side
-x+x cancels out
5x+x=6x
now we have
138=6x
step 3 divide each side by 6
6x/6=x
138/6=23
we´re left with x=23
Answer:
he usual definition is that every face must have the same number of edges, and the same number of faces must meet at every vertex. The key to most proofs of this classification is the Euler characteristic.
Step-by-step explanation:
<h2>47/100</h2><h3></h3><h3>0.2 + x = 0.67</h3><h3>subtract 0.2 from both sides</h3><h3>x = 0.47</h3>
