Can u help plz i need it quick

X=20°

Step-by-step explanation:

Angle in a straight line is 180°

=> 7x+40°=180°

=> 7x=180°-40°

=> 7x=140°

=> x=20°

Hope this helps you.

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w

i think the answer is d im not sure