Answer:
3−4(1+a)=7Step 1: Simplify both sides of the equation.3−4(1+a)=73+(−4)(1)+(−4)(a)=7(Distribute)3+−4+−4a=7(−4a)+(3+−4)=7(Combine Like Terms)−4a+−1=7−4a−1=7Step 2: Add 1 to both sides.−4a−1+1=7+1−4a=8Step 3: Divide both sides by -4.−4a−4=8−4a=−2
Answer:a=−2