Quarter x plus eighteen equals x

2 answers:

7 0

(1/4)x + 18 = x

Lets start off by subtracting (1/4)x from each side. We are now left with 18= (3/4)x.

We can now divide each side by 3/4 or multiply by the reciprocal (4/3) to find our answer, which is 24.

Jet001 [13]3 years ago

3 0

Lets write as an equation:
x/4 + 18 = x
to get rid of fraction lets multiply the whole equation by 4:
x + 4*18 = 4x
x + 72 = 4x
3x = 72
x = 72/3
x = 24
that is the solution

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<h3>System of Linear Equations</h3>

System of linear equations is the given term math for two or more equations with the same variables. The solution of these equations represents the point at which the lines intersect.

The question gives:

Perimeter=28cm

Area= 42 cm²

If the perimeter is the sum of all sides of the rectangle, you have:

Perimeter= 2b+2h=28

If the area of the rectangle is 42cm², you have:

Area=bh=42 cm²

You can write a system of linear equations.

2b+2h=28 (1)

bh=42 (2)

From equation 2, you have $b=\frac{42}{h}$ . Then, you can replace it in equation 1.