Question

7x + 3y = m

Answer 1

QUESTION 1

The given equation is

$7x + 3y = m$

We want to solve for y in the given equation.

First, we add
$-7x$
to both sides to obtain,

$- 7x + 7 x+ 3y = m - 7x$

This simplifies to,

$3y = m - 7x$

We divide both sides by 3 to get,

$y = \frac{m - 7x}{3}$

QUESTION 2

The given equation is,

$4(r + 3) = t$

We want to make
$r$
the subject.

We first of all divide both sides by 4 to get,

$\frac{4(r + 3)}{4} = \frac{t}{4}$

We now cancel out the common factor on the left hand side to get,

$r + 3 = \frac{t}{4}$

Let us add -3 to both sides of the equation to obtain,

$r + 3 + - 3 = \frac{t}{4} + - 3$

$r = \frac{t}{4} - 3$


QUESTION 3

The given equation is

$2x + b = w$

We want to solve for x, so we subtract b from both sides to obtain,

$2x + b - b = w - b$

This simplifies to,

$2x = w - b$

We divide both sides by 2 to obtain,

$\frac{2x}{2} = \frac{w - b}{2}$

We cancel out common factors to get,

$x = \frac{w - b}{2}$

QUESTION 4

The given equation is

$x(1 + y) = 2$

We want to solve for x, so we divide both sides by

$(1 + y)$
to obtain,

$\frac{x(1 + y)}{1 + y} = \frac{2}{1 + y}$

We cancel out the common factors to obtain,

$x = \frac{2}{1 + y}$

Answer 2

7x + 3y = m

3y = m - 7x

y = (m - 7x) / 3

4( r + 3 ) = t

r + 3 = t / 4

r = ( t - 3 )/ 4

2x + b = w

2x = w- b

x = ( w - b ) / 2

x (1 + y) = 2

x = 2 / 1 +y