Find the value of 2a - b if a + b = 8 and 4a - b = 22

Similar Questions

Solve the equation (x +2)(x - 7) = 0 ...

There are 30 students in a class. 15 study woodwork and 13 study metal work. 6 study neither of the ...

If the shadow of a pole 7m high is 1/2 its length what is the angle of elevation of the sun, correct...

A boy estimated his transport fare for a journey as N190 instead of N200. Find the percentage error ...

Evaluate $\int^{1}_{-1}(2x + 1)^2 \mathrm d x$...

Simplify $(216{\frac{1}{3}})^{-2}$...

For what value of x is the expression x - 5/x2 - 2x - 3 not defined?...

In the diagram, $QR||TP and W\hat{P}T = 88^{\circ}$. Find the value of x...

A fence 2.4 m tall, is 10m away from a tree of height 16m. Calculate the angle of elevation of the t...

Evaluate $5\frac{2}{5}\times \left(\frac{2}{3}\right)^2\div\left(1\frac{1}{2}\right)^{-1}$...