Solving an equation with 2 variables

185 - x = - 0,26y

y= ( 200 - x) / 1.29

please show method
thank you

185-x=-.0.26(( 200 - x) / 1.29)
238.65-1.29x=-52+.26x

290.65=1.55x
187.52=x
y=9.67

Simply solve the first equation simply for x.

185+0.26y=x

Now you can substitute
y= (200- (185+0.26y)) / 1.29

When you simplify the above equation, you get

y= (15+0.26y) / 1.29

Then multiply both sides by 1.29

1.29y = 15 + 0.26y

Then put all like terms on each side

1.29y-0.26y=15
1.03y=15.

Then solve for y independently by dividing both sides by 1.03

y=14.563

NOW SUBSTITUTE THIS VALUE FOR Y INTO ORIGINAL EQUATION FOR X.

14.563 = (200 - x) / 1.29

Multiply both sides again by 1.29

18.736 = 200 - x

Now just simply solve for x

x = 181.264

y = 14.563

Pretty messy numbers if you ask me, normally in school the numbers come out pretty.

replace y in the top with what y equals from the bottom, then solve for x. After you find x, then plug it back into the equation.