-2(2R+3)-1(R-4)=3

Solution for -2(2R+3)-1(R-4)=3 equation:

Simplifying
-2(2R + 3) + -1(R + -4) = 3

Reorder the terms:
-2(3 + 2R) + -1(R + -4) = 3
(3 * -2 + 2R * -2) + -1(R + -4) = 3
(-6 + -4R) + -1(R + -4) = 3

Reorder the terms:
-6 + -4R + -1(-4 + R) = 3
-6 + -4R + (-4 * -1 + R * -1) = 3
-6 + -4R + (4 + -1R) = 3

Reorder the terms:
-6 + 4 + -4R + -1R = 3

Combine like terms: -6 + 4 = -2
-2 + -4R + -1R = 3

Combine like terms: -4R + -1R = -5R
-2 + -5R = 3

Solving
-2 + -5R = 3

Solving for variable 'R'.

Move all terms containing R to the left, all other terms to the right.

Add '2' to each side of the equation.
-2 + 2 + -5R = 3 + 2

Combine like terms: -2 + 2 = 0
0 + -5R = 3 + 2
-5R = 3 + 2

Combine like terms: 3 + 2 = 5
-5R = 5

Divide each side by '-5'.
R = -1

Simplifying
R = -1