Solve 4(7−x)=16 by interpreting the expression in parentheses as a single quantity.

3

Step-by-step explanation:

First we expand the equation. 4(7-x) = 28 - 4x

Now we have 28 - 4x = 16, we now have to isolate the x by subtracting 28 from both sides

-4x = -12

If we divide both sides by -4, we find x = 3

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

70.30

step-by-step explanation: