Isolate r:1.25=0.75+r Which operation should be used to isolate r? In 1.25=0.75+r, we should subtract 0.75 from both sides to isolate r. Subtract 0.75 from both sides.
Subtract 0.75:1.25−0.75=r Find the value of r.1.25−0.75=0.50r=0.50
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