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Fed [463]
3 years ago
5

5.4 = a - (-1.8) solve for a.

Mathematics
2 answers:
Agata [3.3K]3 years ago
4 0
Let's solve your equation step-by-step.<span>5.4=<span>a−<span>(<span>−1.8</span>)</span></span></span>Step 1: Simplify both sides of the equation.<span>5.4=<span>a+1.8</span></span>Step 2: Flip the equation.<span><span>a+1.8</span>=5.4</span>Step 3: Subtract 1.8 from both sides.<span><span><span>a+1.8</span>−1.8</span>=<span>5.4−1.8</span></span><span>a=3.6</span>
WINSTONCH [101]3 years ago
4 0
Subtracting a negative cancels them to become positve so now we have a + 1.8 = 5.4.

subtract 1.8 from both sides of a + 1.8 = 5.4 to isolate the variable and we have:
a = 3.6 because 5.4 - 1.8 is 3.6.

therefore a = 3.6. hope this helped! plug it into the original equation and you see that you get 5.4 = 5.4
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