3x-4y-8=12
first combine like terms
3x-4y=12+8
then isolate on variable
3x=20+4y
now divide by three to find x
x=20/3+4/3 x=8
to find y plug in x to the original equation
3(8)-4y-8=12
24-4y=20
-4y=20-24
-4y=-4
y=1
Without values for the other variables, I assume you're asking for a literal equation.
12y+d=-19y+t
31y+d=t
31y=-d+t
y=(-d+t)/31
Answer:
x = 12 degree
Step-by-step explanation:
3x + 19 + 5x = 115 degree (sum of two interior opposite angles are equal to the third side)
8x + 19 = 115
8x = 115 - 19
x = 96 /8
x = 12