Answer:
Step-by-step explanation:
Just multiply the first equation by -1 and then add them together to find x. Should look something like
-2x - y = -7
5x + y = 9
--------------------
3x + 0 = 2
x = 2/3
Now back substitute using either equation to find y. I'll use the first:
2(2/3) + y = 7
4/3 + y = 7
y = 7 - 4/3 = 21/3 - 4/3 = 17/3
Answer:
x=2/3
y=17/3
Answer:
no
Step-by-step explanation:
Answer:
Numbers greater than 52 include but are not limited to 53, 53, 55, up to numbers like 123,786, 638,908, and 100,000,000
Answer:
x=4
Step-by-step explanation:
The left and right sides are equal so:
5x-2 + 4x = 7x-4 + x+6
Collect the like terms and calculate the sum :
9x-2 = 8x+2
Move terms and change it's sign:
9x-8x = 2+2
And finally:
x=4
Also if you solve the equations of the other sides you'll find x₁=0.5 and x₂=4
which the intersection with the previous answer will be x=4
The two angles when added together need to equal 180 degrees:
-4x +5 + -13x +39 = 180
Simplify:
-17x + 44 = 180
Subtract 44 from each side:
-17x = 136
Divide both sides by -17:
x = 136 / -17
x = -8