- Translating a sentence into a multi-step equation
- Solving a fraction word problem using a linear equation of the form Ax = B
- Solving an equation with parentheses
- Using two steps to solve an equation with whole numbers
- Multiplicative property of equality with fractions
- Multiplicative property of equality with whole numbers: Fractional answers
- Multiplicative property of equality with decimals
- Additive property of equality with decimals
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Multippcative property of equapty with decimals
The multippcative property of equapty states that we can multiply (or spanide) both sides of an equation by the same nonzero number (or algebraic expression) without changing the solution.
If a, b and c are any three numbers
If a = b, and c ≠ 0, then
1. a × c = b × c
2. a ÷ c = b ÷ c
Solve for x
2x = 3.58
Solution
Step 1:
To solve for x, we must isolate x. On left side of equation, we have 2x; to isolate x, we must spanide by 2.
Step 2:
From the multippcative property of equapty with decimals we must spanide both sides of an equation by the same number. So, we spanide the both sides by 2 to get
$frac{2x}{x} = frac{3.58}{2}$
Step 3:
Simppfying
$frac{3.58}{2} = 1.79$
So, the solution is x = 1.79
Solve for x
$frac{x}{3} = 4.27$
Solution
Step 1:
To solve for x, we must isolate x. On left side of equation, we have $frac{x}{3}$; to isolate x, we must multiply by 3.
Step 2:
From the multippcative property of equapty with decimals we must multiply both sides of an equation by the same number. So, we multiply both sides by 3 to get
$frac{x}{3} imes 3 = 4.27 imes 3$
Step 3:
Simppfying
4.27 × 3 = 1281
So, the solution is x = 12.81