We get that the value of x is option (b) 70.
We are given an equation:
x / 90 = 7 /9.
An equation is an expression that has an equality sign in between.
For example: 2 x + 4 y = 6 or 4 x + 8 y = 9
We have to solve the equation to find the value of x.
First, cross multiplying the numbers, we get that:
x × 9 = 7 × 90.
Now simplifying the expression, we get that:
9 x = 630
Solving the expression to get the value of x:
x = 630 / 9
x = 70.
Therefore, we get that the value of x is option (b) 70.
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