What is three ratios equivalent to 18: 4

For this case we have the following ratio:

What we must do is write three equivalent ratios.

For this, we must rewrite the fraction.

We have then:

Way 1:

Divide numerator and denominator between two:

Way 2:

Multiply numerator and denominator by two:

Way 3:

Multiply numerator and denominator by four:

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.